Exhibit 99.1


NEWS FROM ESCO TECHNOLOGIES

For more information contact:                              For media inquiries:
Patricia K. Moore                                          David P. Garino
Director, Investor Relations                               (314) 982-0551
ESCO Technologies Inc.
(314) 213-7277


                     ESCO ANNOUNCES SECOND QUARTER RESULTS
                     -------------------------------------
                     SALES UP 15 PERCENT / EPS UP 60 PERCENT
                     ---------------------------------------


     ST. LOUIS, May 5, 2009 - ESCO Technologies Inc. (NYSE: ESE) today announced
its results for the second quarter ended March 31, 2009.

     Within this release,  references to "quarters" and "year-to-date" relate to
the fiscal  quarters and  six-month  periods  ended March 31 for the  respective
fiscal years noted.

     Net  earnings  and EPS  are  presented  from  "Continuing  Operations"  and
"Discontinued  Operations."  Continuing  Operations represent the results of the
ongoing businesses of the Company. Discontinued Operations represent the results
of  Comtrak  Technologies  LLC which was sold in March  2009 and the  filtration
business of  Filtertek  which was sold in November  2007 (first  quarter  fiscal
2008).

Second Quarter 2009 vs. 2008 Highlights - Continuing Operations
- ---------------------------------------------------------------

o Net sales increased 14.7 percent to $154.2 million.

o EBIT dollars increased 34.5 percent to $18.4 million.

o EBIT as a percentage of sales increased to 11.9 percent from 10.2 percent.

o EPS increased 60 percent to $0.40 per share from $0.25 per share.

o Net debt  outstanding  was  $181.7  million  at March 31,  2009  reflecting  a
  leverage ratio of 1.99x, well below the credit facility covenant of 3.5x.

o Entered orders were $156.7 million with a book-to-bill ratio of 102 percent.

o Firm  orders  of Aclara RF AMI  products  with PG&E gas were  approximately
  $25 million  (bringing  total gas product orders to over 3 million units to
  date) and with New York City Water were approximately $16 million.

Chairman's Commentary
- ---------------------

     Vic Richey,  Chairman and Chief Executive  Officer,  commented,  "I am very
pleased with the significant  growth  reflected in our second quarter  operating
results, especially in this challenging global economy.  Additionally,  I remain
cautiously optimistic about the balance of the year based on our growth in sales
and earnings  year-to-date,  our strong backlog in place today, and our expected
orders for the balance of the year.

     "Through regular and detailed  planning meetings with our Management teams,
we continue to maintain a high degree of visibility and  confidence  surrounding
the balance of the fiscal year.  But given the  uncertainties  of today's  macro
environment,  we are  taking  a more  conservative  posture  as we  address  our
expected  outlook for 2009. As a result of the current  cycle,  we are adjusting
our total year  expectations to reflect a modest level of  uncertainty,  which I
would characterize as a reflection of our conservative planning approach.

     "In spite of today's economy,  we continue to see meaningful  opportunities
developing  across the businesses  which we believe can help shield our downside
risks.  To help weather this storm, we will adhere to our strict cost management
disciplines  as  we  work  our  way  through  this  cycle  and  demonstrate  our
resiliency.

     "While  aggressively  managing our  operating  costs,  we will maintain our
focus on creating significant growth opportunities.  To ensure future growth, we
have maintained our R&D and engineering expenditures,  primarily directed toward
new product development initiatives in the AMI and Smart Grid area, along with a
significant amount of new Space program  opportunities.  I am confident that our
new products currently being introduced will position us well for the future.

     "In  closing,  we are  making  meaningful  progress  at PG&E on the gas AMI
project, along with the New York City Water and Idaho Power AMI contracts."

Sales
- -----

     For 2009,  sales  increased 14.7 percent during the second quarter and 11.8
percent for the first six months  compared to the same periods of 2008. As noted
in earlier  releases,  the prior year sales  amount  included  $20.5  million of
revenues recognized that had previously been deferred from prior periods related
to PG&E / TNG revenue recognition.  YTD sales increased 21 percent excluding the
2008 TNG revenue recognized.

     Utility  Solutions Group (USG) sales in 2009 increased 27.4 percent for the
second quarter and 18.8 percent for the first six months  compared to the second
quarter  and  first  six  months  of 2008,  respectively.  Absent  the TNG sales
deferral in 2008,  YTD sales  increased  37.1 percent  from the prior year.  USG
sales increases in 2009 were primarily driven by significantly higher deliveries
of fixed network RF AMI products to PG&E (gas) and continued  increases in water
AMI product deliveries. Additionally, having Doble for six months of 2009 versus
four months in 2008 contributed an additional $13 million of YTD sales.

     Test sales in 2009 increased  slightly in the second quarter and are up 5.6
percent YTD,  primarily  due to an increase in large  chamber  deliveries to the
international wireless and electronics end-markets.

     Filtration  sales in 2009 decreased  slightly in the second quarter and YTD
as sales increases in the defense  aerospace and space product lines were offset
by lower commercial aerospace product deliveries.

Earnings Before Interest and Taxes (EBIT)
- -----------------------------------------

     On a segment basis,  items that impacted EBIT dollars and EBIT as a percent
of sales  ("EBIT  margin")  during the second  quarter and YTD periods of fiscal
2009 included the following:

     In the USG  segment,  EBIT for the 2009 second  quarter  was $16.1  million
(17.2 percent of sales) compared to $11.2 million (15.2 percent of sales) in the
2008 second quarter. The $4.9 million increase in EBIT dollars was driven by the
significant sales increase of RF AMI products noted above. The increase in USG's
2009 YTD EBIT was mitigated by the $8.5 million of EBIT  associated with the TNG
revenue recognized in 2008. The RF AMI business contributed the largest increase
to EBIT during the first six months of 2009.

     In the Test  segment,  EBIT  dollars and EBIT  margins  were  significantly
higher in 2009 due to the sales  increases in 2009,  favorable  changes in sales
mix, and rigorous cost controls.

     In the Filtration segment,  EBIT dollars and EBIT margins decreased in 2009
due to lower sales of high margin commercial aerospace products,  an increase in
research  and  development  costs,  and higher bid and proposal  costs  incurred
related to the pursuit of a significant number of Space related projects.

     Corporate  operating  costs were higher in 2009 due to higher  amortization
expenses related to recent  acquisitions that included  identifiable  intangible
assets.

Effective Tax Rate
- ------------------

     The effective tax rate from Continuing  Operations in the second quarter of
2009 was  36.1 percent  compared to 37.4 percent in the second  quarter of 2008.
The 2009 second  quarter tax rate was  consistent  with the  Company's  guidance
provided in February 2009.  The 2009 YTD rate was 34.1 percent  compared to 37.6
percent and was  favorably  impacted by Congress'  extension of the research tax
credit during the 2009 first quarter.

New Orders
- ----------

     New orders  received  were $156.7  million  and $296.2  million in the 2009
second quarter and YTD periods,  respectively,  compared to  $162.5 million  and
$293.2 million in the comparable  periods of 2008. Backlog at March 31, 2009 was
$260.8 million.

     Orders from PG&E for AMI gas products in the 2009 second quarter were $24.3
million, bringing the total gas project-to-date to over 3 million units, or $175
million.  The entire PG&E  project-to-date  (gas and  electric)  represents  3.7
million units, worth approximately $225 million.

     Cumulative  orders-to-date  for the $68.3  million  New York City Water AMI
project were $20.9 million,  and  orders-to-date for the $25 million Idaho Power
AMI project were $6.2 million.

Business Outlook - 2009
- -----------------------

     Statements contained in the preceding and following paragraphs are based on
current expectations. Statements that are not strictly historical are considered
forward-looking, and actual results may differ materially.

     The  Business  Outlook  described  below  excludes the impact of any future
acquisitions  or  divestitures,  and reflects the impact of the  amortization of
identifiable  intangible  purchase accounting assets related to Aclara Software,
Aclara RF, Doble and LDIC; the impact of the Doble inventory  step-up  resulting
in "lost" profit; and the amortization of TWACS NG software.

Aclara RF Facility Relocation
- -----------------------------

     Due to its  significant  sales  growth,  Aclara RF Systems  Inc.  (formerly
Hexagram,  Inc.) is in the  process  of  relocating  its  operations  from three
existing leased facilities,  to a single,  newer, more efficient leased facility
in the greater Cleveland area. As a result, approximately $2.0 million in pretax
nonrecurring  exit and relocation  costs are expected to be incurred  during the
second half of fiscal 2009 in the Utility Solutions Group,  primarily related to
the noncash write-off of leasehold  improvements,  vacant facility charges,  and
moving costs.

Comtrak Technologies LLC
- ------------------------

     As previously disclosed,  Management had planned to exit this business, and
during  March  2009,  the assets of Comtrak  were sold for $3.4  million and its
results of operations are included in Discontinued Operations.

Revenues and Earnings Per Share - 2009
- --------------------------------------

     Based on Management's  current expectations along with the sale of Comtrak,
the Company is revising its outlook for fiscal 2009 as follows:

o    Revenues of approximately $650 million;

o    EPS - GAAP Basis of between $1.90 and $2.00  (including  $0.05 per share of
     expenses related to the Aclara RF facility  relocation charge noted above);
     and,

o    EPS - Adjusted Basis of between $2.32 and $2.42 per share.

     EPS -  Adjusted  Basis  excludes  approximately  $0.42  per  share of costs
related to TWACS NG software amortization,  purchase accounting intangible asset
amortization related to the Company's recent acquisitions,  and Doble's purchase
accounting inventory step-up.

     Management  believes using "EPS - Adjusted Basis" as a financial measure is
important for investors to understand  the Company's  operations and its ability
to service its debt. The full-year 2009 tax rate is expected to be approximately
35 percent,  with  quarterly  variations  depending  on the timing and amount of
discrete tax benefits and charges.

Chairman's Commentary - Wrap-Up
- -------------------------------

     Mr.  Richey  further  commented,  "As  noted  above,  I  remain  cautiously
optimistic  about  the  balance  of fiscal  2009.  Through  rigorous  management
oversight  and a  disciplined  planning  process,  I am  confident  that we have
sufficient opportunities and the appropriate  contingencies in place to allow us
to execute our current plan and achieve the operating  results  within our range
of  expectations.  Having  Doble  for  the  full  year  and  beginning  our  AMI
deployments  with Idaho Power and New York City Water should continue to provide
us with positive momentum throughout 2009."

Conference Call
- ---------------

     The Company will host a conference  call today,  May 5, at 4 p.m.,  Central
Time, to discuss the Company's second quarter  operating  results.  A live audio
webcast will be available on the Company's web site at www.escotechnologies.com.
Please  access the web site at least 15 minutes  prior to the call to  register,
download,  and install any necessary audio software.  A replay of the conference
call will be available  for seven days on the  Company's web site noted above or
by phone (dial 1-888-203-1112 and enter the pass code 4500221).

Forward-Looking Statements
- --------------------------

     Statements in this press release regarding the amounts and timing of fiscal
2009 future revenues,  results, earnings, EBIT, EPS - Adjusted Basis, EPS - GAAP
Basis, sales growth,  orders, growth opportunities,  success of new products and
technologies, costs incurred with the Aclara RF relocation and new building, the
fiscal  2009  effective  annual tax rate,  the timing and  certainty  of utility
customer spending,  the long-term success of the Company,  and any other written
or oral  statements  which are not  strictly  historical  are  "forward-looking"
statements  within the  meaning of the safe  harbor  provisions  of the  federal
securities  laws.   Investors  are  cautioned  that  such  statements  are  only
predictions  and  speak  only as of the date of this  release,  and the  Company
undertakes  no duty to update.  The Company's  actual  results in the future may
differ materially from those projected in the forward-looking  statements due to
risks and  uncertainties  that exist in the  Company's  operations  and business
environment including, but not limited to: the risk factors described in Item 1A
of the Company's  Annual Report on Form 10-K for the fiscal year ended September
30, 2008; the effect of the American  Recovery and Reinvestment Act of 2009; the
success of the Company's  competitors;  changes in Federal or State energy laws;
the timing and  content of  purchase  order  releases  under the  Company's  AMI
contracts;  the Company's  successful  performance  of its AMI  contracts;  site
readiness issues with Test segment customers;  weakening of economic  conditions
in served  markets;  changes  in  customer  demands  or  customer  insolvencies;
competition;  intellectual property rights;  technical difficulties;  unforeseen
charges impacting corporate operating expenses; the performance of the Company's
international operations; material changes in the costs of certain raw materials
including   steel  and  copper;   delivery  delays  or  defaults  by  customers;
termination  for  convenience  of customer  contracts;  timing and  magnitude of
future  contract  awards;  containment of  engineering  and  development  costs;
performance  issues  with  key  customers,  suppliers  andsubcontractors;  labor
disputes;  changes in laws and regulations  including but not limited to changes
in  accounting   standards  and  taxation   requirements;   costs   relating  to
environmental matters; uncertainty of disputes in litigation or arbitration; and
the Company's successful execution of internal operating plans.

     ESCO,  headquartered  in St. Louis, is a proven supplier of special purpose
utility solutions for electric, gas, and water utilities, including hardware and
software  to  support  advanced   metering   applications  and  fully  automated
intelligent  instrumentation.  In  addition,  the  Company  provides  engineered
filtration products to the aviation, space, and process markets worldwide and is
the industry leader in RF shielding and EMC test products.  Further  information
regarding  ESCO and its  subsidiaries  is available on the Company's web site at
www.escotechnologies.com.
- -------------------------

                               - tables attached -




                     ESCO TECHNOLOGIES INC. AND SUBSIDIARIES
           Condensed Consolidated Statements of Operations (Unaudited)
                (Dollars in thousands, except per share amounts)

                                           Three Months    Three Months
                                               Ended           Ended
                                          March 31, 2009  March 31, 2008
                                          --------------  --------------


Net Sales                                     $154,156        134,400
Cost and Expenses:
  Cost of sales                                 92,226         77,889
  SG&A                                          38,237         38,535
  Amortization of intangible assets              4,985          4,467
  Interest expense                               1,756          3,172
  Other expenses (income), net                     357           (136)
                                               -------        --------
    Total costs and expenses                   137,561        123,927
                                               -------        -------

Earnings before income taxes                    16,595         10,473
Income taxes                                     5,990          3,912
                                                 -----          -----

    Net earnings from continuing operations     10,605          6,561

Loss from discontinued operations, net of
 tax benefit of $101 and $292, respectively       (177)          (479)

Loss on sale from discontinued operations,
 net of tax benefit of $905                        (32)             -
                                                   ---            ---
    Net earnings from discontinued operations     (209)          (479)

    Net earnings                              $ 10,396          6,082
                                              ========          =====


Earnings per share:
    Basic
      Continuing operations                       0.41           0.25
      Discontinued operations                    (0.01)         (0.01)
                                                 -----          -----
      Net earnings                            $   0.40           0.24
                                              --------           ----

    Diluted
      Continuing operations                       0.40           0.25
      Discontinued operations                    (0.01)         (0.02)
                                                 -----          -----
      Net earnings                            $   0.39           0.23
                                              ========           ====

Average common shares O/S:
    Basic                                       26,177         25,847
                                                ======         ======
    Diluted                                     26,470         26,250
                                                ======         ======

                                    - more -



                     ESCO TECHNOLOGIES INC. AND SUBSIDIARIES
           Condensed Consolidated Statements of Operations (Unaudited)
                (Dollars in thousands, except per share amounts)

                                            Six Months      Six Months
                                               Ended           Ended
                                          March 31, 2009  March 31, 2008
                                          --------------  --------------

Net Sales                                     $301,513        269,672
Cost and Expenses:
  Cost of sales                                184,842        162,071
  SG&A                                          77,519         70,986
  Amortization of intangible assets              9,587          7,933
  Interest expense                               4,374          4,529
  Other expenses (income), net                     244           (350)
                                               -------        --------
    Total costs and expenses                   276,566        245,169
                                               -------        -------

Earnings before income taxes                    24,947         24,503
Income taxes                                     8,502          9,208
                                                 -----          -----

    Net earnings from continuing operations     16,445         15,295

Loss from discontinued operations, net of tax
 of $112 and $1,125, respectively                 (197)        (1,423)

Loss on sale from discontinued operations, net
 of tax of $905 and $4,809, respectively           (32)        (4,974)
                                                   ---         ------

    Net earnings from discontinued operations     (229)        (6,397)

    Net earnings                              $ 16,216       $  8,898
                                              ========       ========


Earnings per share:
    Basic
      Continuing operations                       0.63           0.59
      Discontinued operations                    (0.01)         (0.25)
                                                 -----          -----
      Net earnings                            $   0.62           0.34
                                              ========           ====

    Diluted
      Continuing operations                       0.62           0.58
      Discontinued operations                    (0.01)         (0.24)
                                                 -----          -----
      Net earnings                            $   0.61           0.34
                                              ========           ====

Average common shares O/S:
    Basic                                       26,143         25,803
                                                ======         ======
    Diluted                                     26,444         26,227
                                                ======         ======

                                    - more -





                     ESCO TECHNOLOGIES INC. AND SUBSIDIARIES
                     Condensed Business Segment Information
                                   (Unaudited)
                             (Dollars in thousands)

                        Three Months Ended         Six Months Ended
                            March 31,                 March 31,
                        2009         2008         2009         2008
                        ----         ----         ----         ----

Net Sales
- ---------
  Utility Solutions
   Group              $ 94,065       73,812      182,266      153,436

  Test                  33,713       33,496       69,202       65,561

  Filtration            26,378       27,092       50,045       50,675
                        ------       ------       ------       ------
    Totals            $154,156      134,400      301,513      269,672
                      ========      =======      =======      =======


EBIT
- ----
  Utility Solutions
   Group              $ 16,138       11,222       26,693       25,965

  Test                   3,748        2,742        6,982        4,732

  Filtration             4,227        4,913        7,090        8,562

  Corporate             (5,762) (1)  (5,232) (2) (11,444) (3) (10,227) (4)
                        ------  --   ------  --  -------  --  -------
    Consolidated EBIT   18,351       13,645       29,321       29,032
    Less: Interest
     expense            (1,756)      (3,172)      (4,374)      (4,529)
                        ------       ------       ------       ------
    Earnings before
     income taxes     $ 16,595       10,473       24,947       24,503
                      ========       ======       ======       ======


Note: Depreciation and amortization expense was $7.2 million and $6.9
      million for the quarters ended March 31, 2009 and 2008,
      respectively, and $15.1 million and $12.4 million for the six-month
      periods ended March 31, 2009 and 2008, respectively.

(1) Includes $1.2 million of amortization of acquired intangible assets.

(2) Includes $1.1 million of amortization of acquired intangible assets.

(3) Includes $2.4 million of amortization of acquired intangible assets.

(4) Includes $1.9 million of amortization of acquired intangible assets.

                                    - more -





                     ESCO TECHNOLOGIES INC. AND SUBSIDIARIES
                  Reconciliation of Non-GAAP Financial Measures
                                   (unaudited)

EPS - Adjusted Basis Reconciliation - FY 2009
- ---------------------------------------------

EPS - GAAP Basis - FY 2009 Range        $1.90     2.00
Adjustments (defined below)              0.42     0.42
                                         ----     ----
EPS - Adjusted Basis - FY 2009 Range    $2.32     2.42
                                        =====     ====

Adjustments exclude pre-tax intangible asset amortization expense
related to TWACS NG software, purchase accounting intangible amortization
related to the Company's acquisitions within the last three years, and the
expense related to the purchase accounting step-up of Doble Engineering
Company inventory.

                                    - more -





                     ESCO TECHNOLOGIES INC. AND SUBSIDIARIES
                Condensed Consolidated Balance Sheets (Unaudited)
                             (Dollars in thousands)

                                               March 31,    September 30,
                                                  2009           2008
                                                  ----           ----

Assets
- ------
  Cash and cash equivalents                    $ 26,600        28,667
  Accounts receivable, net                      121,156       134,710
  Costs and estimated earnings on
   long-term contracts                            4,239         9,095
  Inventories                                    81,868        65,019
  Current portion of deferred tax assets         14,540        15,368
  Other current assets                           17,215        14,888
  Current assets from discontinued operations         -         2,889
                                                -------       -------
    Total current assets                        265,618       270,636

  Property, plant and equipment, net             69,774        72,353
  Goodwill                                      329,659       328,878
  Intangible assets, net                        227,690       236,192
  Other assets                                   17,565        17,665
  Other assets from discontinued operations           -         2,349
                                                -------       -------
                                               $910,306       928,073
                                               ========       =======

Liabilities and Shareholders' Equity
- ------------------------------------

  Short-term borrowings and current maturities
   of long-term debt                           $ 50,000        50,000
  Accounts payable                               43,768        48,982
  Current portion of deferred revenue            18,386        18,226
  Other current liabilities                      44,531        49,934
  Current liabilities from discontinued
   operations                                         -         1,541
                                                -------         -----
    Total current liabilities                   156,685       168,683
  Long-term portion of deferred revenue           2,087         2,228
  Deferred tax liabilities                       83,167        83,515
  Other liabilities                              20,242        21,760
  Long-term debt                                165,504       183,650
  Shareholders' equity                          482,621       468,237
                                                -------       -------
                                               $910,306       928,073
                                               ========       =======

                                    - more -





                     ESCO TECHNOLOGIES INC. AND SUBSIDIARIES
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                                   (Unaudited)
                             (Dollars in thousands)

                                                         Six Months Ended
                                                           March 31, 2009
                                                           --------------
Cash flows from operating activities:
   Net earnings                                              $ 16,216
   Adjustments to reconcile net earnings
    to net cash provided by operating activities:
         Net loss from discontinued operations                    229
         Depreciation and amortization                         15,108
         Stock compensation expense                             2,097
         Changes in operating working capital                 (11,413)
         Effect of deferred taxes                              (1,074)
         Other                                                 (1,242)
                                                               ------
           Net cash provided by operating activities -
            continuing operations                              19,921
           Net loss from discontinued operations,
            net of tax                                           (229)
           Net cash provided by discontinued operations            39
                                                               ------
           Net cash used by operating activities -
            discontinued operations                              (190)
                                                               ------
           Net cash provided by operating activities           19,731
                                                               ======

Cash flows from investing activities:
   Additions to capitalized software                           (2,487)
   Capital expenditures - continuing operations                (3,116)
                                                               ------
       Net cash used by investing activities -
        continuing operations                                  (5,603)
   Proceeds from divestiture of business, net -
    discontinued operations                                     3,100
                                                                -----
       Net cash used by investing activities                   (2,503)
                                                               ------

Cash flows from financing activities:
   Proceeds from long-term debt                                27,000
   Principal payments on long-term debt                       (45,146)
   Excess tax benefit from stock options exercised                782
   Proceeds from exercise of stock options                      1,164
   Other                                                         (190)
                                                               ------
     Net cash used by financing activities                    (16,390)
                                                              -------

Effect of exchange rate changes on cash and cash equivalents   (2,905)
                                                               ------

Net decrease in cash and cash equivalents                      (2,067)
Cash and cash equivalents, beginning of period                 28,667
                                                               ------
Cash and cash equivalents, end of period                     $ 26,600
                                                             ========

                                    - more -





                     ESCO TECHNOLOGIES INC. AND SUBSIDIARIES
                          Other Selected Financial Data
                                   (Unaudited)
                             (Dollars in thousands)

Backlog And Entered
 Orders - Q2 FY 2009     Utility Solutions    Test   Filtration    Total
 -------------------     -----------------    ----   ----------    -----
  Beginning Backlog -
   12/31/08 continuing
   opers                      $121,554       64,236     72,506    258,296
  Entered Orders                97,247       26,024     33,413    156,684
  Sales                        (94,065)     (33,713)   (26,378)  (154,156)
                               -------      -------    -------   --------
  Ending Backlog -
   3/31/09                    $124,736       56,547     79,541    260,824
                              ========       ======     ======    =======


Backlog And Entered
 Orders - YTD Q2
 FY 2009                 Utility Solutions    Test   Filtration    Total
 -------                 -----------------    ----   ----------    -----
  Beginning Backlog -
   9/30/08 continuing
   opers                      $124,847       69,823     71,463    266,133
  Entered Orders               182,155       55,926     58,123    296,204
  Sales                       (182,266)     (69,202)   (50,045)  (301,513)
                              --------      -------    -------   --------
  Ending Backlog -
   3/31/09                    $124,736       56,547     79,541    260,824
                              ========       ======     ======    =======


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