EPA 1664 Standards
| Item No. | Description | Price |
|---|---|---|
| G2018 | SPE - O/G Standard, 5mL tubes, 40mg HEM, 20pk | $99.00 |
| G3020 | SPE - O/G, 9X30mL Bottles, HEM at 40mg/mL (w/v) in Ace | $115.00 |
| G3023 | SPE - O/G MDL Standard, 10mL tubes, 7mg HEM, 20pk | $99.00 |
| G3025 | SPE - O/G Standard, 10mL tubes, 40mg HEM, 20pk | $99.00 |
| G3026 | SPE - O/G Standard MDL, 10mL tubes, 10mg HEM, 20pk | $99.00 |
Convenient Snip & Pour Teflon Tubes
Just snip the top of the Teflon tube and pour the contents into the sample container or extraction apparatus. The precise volume of HEM is delivered to the LCS or Matrix Spike sample. HEM contents do not adhere to the sides of the single-use Teflon tube. Inexpensive Snip & Pour tubes eliminate pipets and require no warming prior to use. Twenty 10mL tubes per pack. Each G3025 tube contains 40mg of extractable HEM per 10mL aliquot while each G3026 tube contains 10mg extractable HEM.
Oil and grease standards are also available in 30mL screw-cap bottles.
Question/Answer
Hello. I need a standard and a certificate of analysis for HEM and SGT-HEM. Do you have one?
There are several options available for this standard. G3025 is the most convenient. It comes in individual tubes with one measured amount on standard inside. It contains 40 mg total HEM and 20 mg SGT-HEM as specified in 1664. G3020 comes packaged as a set of nine 30 mL bottles. These contain HEM at a concentration of 4.0 mg/mL and SGT-HEM at 2.0 mg/mL. This allows you to customize the amount of standard you wish to add each time. We also offer 2 different options intended for MDL determination. G3023 is 20 tubes at 7 mg HEM, 3.5 mg SGT-HEM and G3026 is 20 tubes at 10 mg HEM, 5.0 mg SGT-HEM. All of these products will come with a certificate of analysis.
Hi Environmental Express, I purchase your 10 mg HEM standards. The certificate that comes with the standards has the concentration but not the uncertainty associated with the 10 mg. Please send to me.
The uncertainty of our cat# G3026 standard is 10mg +/- 2% HEM.