This solution is prepared according to the directions in Standard Methods. It contains 150 mg Glucose and 150 mg Glutamic acid per liter of solution. If analyzed according to the method, it will give the required BOD value of 198 ± 30.5 mg/L. This does come with a certificate of analysis.

The manufacturer recommends holding the seed suspension for a total of 6 hours from rehydration.

The instructions state to use 500 mL of dilution water to rehydrate each capsule. However, this volume can be adjusted according to individual laboratory procedures to compensate for the source water, desired strength of seed or other factors.

We do not recommend reuse of the bottles. The coating on the inside of the bottle is what prevents the seepage of oxygen through the plastic. This coating can become compromised in the cleaning process.

The shelf life of our Polyseed capsules is 2 years from the date of manufacture.