COD Vials, EPA Approved

COD Vials, EPA Approved

Our COD MicroVials meet all the requirements set forth in HazCom 2012. We have reformatted our Safety Data Sheets and our labels have been updated to the GHS format as seen below.

COD GHS Box Labels COD GHS Vial Labels

California Proposition 65

Click the following link for more information on Environmental Express's compliance with California Proposition 65.

Item No. Description
B1010 COD Digestion Vials w/Hg, 0-150mg/L, 100pk
B1015 COD Digestion Vials w/Hg, 0-1500mg/L, 100pk


I need the recipe for the COD vials Cat # B1015 from an audit finding to show they are composed as the method states. Do you have a certifciate of conformance that states the composition?

As is stated on the product page, this item complies with Standard Methods 5220D. Our digestion solution is 10.216 g potassium dichromate, 167 mL sulfuric acid, and 33.3 g mercuric sulfate per 1000 mL. The sulfuric acid reagent contains 5.5 g silver sulfate per kg sulfuric acid. The reagents are added to the tube in the proper proportion to react with 2.0 mL sample.

Do the COD vials come with mercuric sulfate?

These COD vials do have mercuric sulfate as one of their components. If you wish to use vials without mercuric sulfate please use item B0015.

How long is the shelf-life period on these vials before expiration?

These vials have a shelf life of 5 years.

Can this test tube be read by a DR2000 machine?

The DR2000 should be pre-programmed with the COD method. To use the COD vials with this instrument, you will need to use the COD Vial Adapter. Based off page 23 of the manual, it looks like the pre-programmed COD methods are Method # 430 (COD limit 200 ppm) and Method # 435 (COD limit 2000 ppm). For the B1015 COD vials, which have a range of 0-1500 mg/L, I would use Method # 435.

What are the concentrations of chromium and silver in ppm for this product?

In each, unused vial, the concentration of silver sulfate is 12601.63 mg/L and the concentration of potassium dichromate is 2857.14 mg/L. Therefore, in each, unused vial, the concentration of silver is 6359.70 mg/L and the concentration of chromium is 1010.69 mg/L. The addition of the sample will alter these concentrations.

do these vials contain mercuric sulfate to allow the complex of any chlorides in my sample?

This product does contain mercuric sulfate. It can complex up to 2000ppm of chloride in your sample.

how do i obtain a copy of the sds for B1015 and B1010

You can find the SDS on our website under the Technical tab or by following this link: http://www.envexp.com/sds

Can you tell me how much mercury (in ppm) each digestion vial contains? Thank you.

There is 6,750 ppm (mg/L) of mercury in each vial.


All of our SDS forms can be found at the following link - http://www.envexp.com/sds \r\nFor COD vials, select \"COD Solutions\" and then the year 2014.

where may i go to get a SDS for COD vials kit B1010, B1015 and B1020? We still have some on hand but need a current SDS for said items.

You can find SDSs on our website under the Technical tab: http://www.envexp.com/sds


You can find our Certificates of Analysis on our website under the Technical tab or at http://www.envexp.com/coa.

Need sds for product number B1010 and B1015

You can find the SDS for these products and others on our website at http://www.envexp.com/msds

What is the max number of mL of sample that these vials can hold?

The amount of reagent that is in the tube is designed to react with 2 mL of sample.

What is the storage condition for the Cat # B1015 and B1010 COD vials ?

Unused vials should be stored in a cool dark location. They are highly acidic and should be kept separated from basic materials. Used vials must be disposed of according to local hazardous waste regulations.

Are the vials calibrated for accuracy

Each lot of vials is checked against a standard solution and against a competitor’s vials to ensure that they give the proper response after digestion.

to what level of chlorides is compensated before dilution is required

The vials contain enough mercuric sulfate to compensate for up to 2,000 mg/L chloride.

How much mercury is in the COD vials, 0-1500mg/L?

Each of these vials contain 27 mg Hg.

What hazardous chemicals are contained in COD vials

COD vials contain several hazardous reagents. Mercuric sulfate is required by regulating authorities to compensate for chloride interference. Potassium dichromate is the active color changing species in the reaction. Sulfuric acid gets the solution into an acceptable pH range for the reaction to occur. Silver sulfate serves as a catalyst for the oxidation of some of the more complex organic compounds. All four of these reagents qualify the mixture for the hazardous list. Please email me at davids@envexp.com if you would like a MSDS sheet for complete documentation.

How much mercury is in the COD vials, 0-150mg/L?

For the 0-150 mg/L COD vials that contain Hg there is 27 mg of Hg / vial.

What is the shelf life of the COD vials?

5 years from the date of manufacture.

We are using a competitive brand of COD vials w/Hg and still having a positive Cl interference down to a 250 ug Cl level. Do you have experimental data to show your vials eliminate Cl interference?

Our COD vials contain 40mg of mercuric sulfate in each vial. Mercuric sulfate is most effective with the ratio of mercuric sulfate to chloride is 10:1. Our vials will effectively treat chloride interferences in a sample containing up to 2000 ppm of chloride (4 mg). For samples exceeding 2000ppm of chloride we recommend diluting the sample prior to digestion.

Click on an item to see additional information or ask a question.