BOD Standards
| Item No. | Description | Price |
|---|---|---|
| D1243 | BOD: Glucose-Glutamic Acid, 24 x 6mL vials | $60.00 |
| D1243C | BOD: Glucose-Glutamic Acid, 24 x 1.2mL Ampule | $40.00 |
| NSIQCI-084 | Universal Wastewater Standard, 4x1 Liter Bottles | $165.00 |
Question/Answer
Is refrigeration required for item # D1243S
The G:Ga standards do not require refrigeration of any kind. The MSDS requires storage capped at room temperature.
Besides seed volume variation, what would cause out of range recoveries for GGA?
There are any number of things that could cause out of range G:GA values. Dilution water quality, strength of seed, incubation temperature and probe calibration are some of the more likely causes. I would be glad to discuss some scenarios and trouble shooting with you. Email me at DavidS@envexp.com or call 1-843-576-1133 and we can go over the process.
Can you send me a sample?
This product is not available to sample.
what is the shelf life of your Universal Wastewater Standard
This product has an expiration date of 1-year from date of manufacture.
Does the pH of the check standard solution need adjusted or just set as is? The analysts have been pH adjusting the GGA they make in house; however, I do not recall doing that in my previous position
The pH of all samples for the BOD test should fall within a value of 6.5 - 7.5. Your blanks, GGA, and seed should be analyzed as-is as the method does not call for any pH adjustment of these solutions.
Is there a range for BOD or just 198mg/L ?
Standard Methods 5210 states that the true value of the GGA standard to be 198 mg/L with an acceptance range of +/- 30.5 mg/L. To comply with the method you should always use this range. This standard as well as the other GGA standards we offer meet the Standard Methods requirements.