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  Hach Certificate of Analysis Online Request Form

A Certificate of Analysis (COA) is a signed document provided for customers who require documentation of reagents they use in testing. The COA describes specific tests performed to confirm the quality of a given reagent lot. It lists tests performed, the tolerance/outcome allowed for each test, results of the tests on a sample of that lot, and lot expiration date.

COA downloading

The interactive request form allows you to select COA pages to download for viewing and printing, providing you with the most current information available.

You will need:

  • The catalog number of your Hach reagent. Catalog numbers are provided on the product label. NOTE: the catalog numbers should be entered on the
    COA Download Page without hyphens or spaces.
  • The reagent lot number, also provided with the reagent.

  • Netscape Navigator 4.0 or above, or
    Internet Explorer 4.0 or above.
  • Adobe Acrobat Reader 4.0 or above. Pages are formatted as Adobe Acrobat 3.0 PDF files. You may download them without using Acrobat Reader, but you will need Reader to view or print the files.

When your selection list is complete, the COA server will generate a single PDF file containing the forms you have selected. File download size is limited to about 60 certificates. If you need more than 60 certificates, you may create separate files.

 Download Acrobat Reader Download Adobe Acrobat Reader

COA Download Troubleshooting Tips

The Hach COA server works best with Netscape 4.0 and Internet Explorer 4.0 and above. The server returns files in the Acrobat Reader 4.0 format. The files require Adobe Acrobat or Adobe Reader 4.0 or above to view and print files. Generally, you will have fewest problems if you are using the most current versions of these programs.

Known problems:

Files do not open in browser window (general)

This can happen in a number of specific cases (see below). The most direct way to solve the problem is to download the file rather than try to open and view with your browser.

1) Right-click on the 'Download Now' button which appears after your COA PDF file has been created.
2) Select the 'save target as...' (Internet Explorer) or 'save link as...' (Netscape) option in the drop-down list.
3) Save the file to your desktop or to a directory, and open the file directly with Acrobat Reader.

If you wish to open the PDF in your browser window and are having a problem, specific known issues are covered below.

Files do not open in an Internet Explorer browser window when using Adobe Acrobat Reader 3.X.

Adobe appears to start, but the browser window is blank. This problem occurs because of a conflict in the way Internet Explorer opens dynamically redirected pages. If you do not wish to upgrade to Acrobat Reader 4.0 (where this problem is easy to correct: see below), here is a workaround:
1. click on the address line of your browser when it is displaying the blank page,
2. delete the http id in the address (http://), and
3. press the "enter" key.

This allows the browser to reload the pdf file as a static file, rather than through a dynamic redirect.

Files do not open in a browser window in Internet Explorer 4.0 or above, when using Adobe Acrobat 4.0 or Acrobat Reader 4.0.

Adobe appears to start, but the browser window is blank. This is the same problem described above, but there is an alternative solution with Acrobat 4.0. You can disable browser display from Acrobat 4.0 and download the file directly to Acrobat or save it to disk to open later.

To disable browser display from Acrobat 4.0 or Reader 4.0:

1) Close Internet Explorer.
2) Start Acrobat Reader 4.0.
3) Choose File > Preferences > General.
4) In the dialog box that appears, clear the checkbox that says "Web Browser Integration" and click the "OK" button. When you download a PDF file with this setting, Internet Explorer will now let you open it in an Acrobat window, or save it to disk.

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