Storing knf solutions
Hi
Just after information on how to store all the solutions. I'm in a warm climate room temperature can be 30 Celsius.
What should be stored in the fridge?
What's OK being stored at room temperature?
Thanks
Top answer
Everything can be stored at room temp just keep it in a shady/cool dry spot in the room
From the KNF library
From the KNF library
Drafted by Claude from Office Hours and the books
·
Sep 2026
·
3 sources
Drake's library gives different storage advice for different solutions.
- LAB: refrigerate any culture you won't use within a week. Refrigerated, it keeps 6 months. (Student's Manual, Basic Course, p. 15) If you have no fridge, add an equal weight of brown sugar and keep it loosely capped. (Student's Manual, Basic Course, p. 15)
- IMO2: it keeps up to 3 years at room temperature, or centuries in a refrigerator. (Cho's Solutions, p. 17)
- PurePolice: it keeps 3 months to a year at room temperature, but use it within 3 months. (Pure KNF Manual, p. 81)
- PureMedicine: store it out of sunlight, airtight, around 1 celsius. (Pure KNF Manual, p. 81)
The library does not cover fish amino acid, minerals, or calcium. It also gives no temperature limit for LAB at 30 Celsius.
Sources
- p. 81 Pure KNF Manual · “PurePolice will store for 3 months to a year at room temperature, but is best to use within the 3 month window”
- p. 15 Student's Manual, Basic Course · “LAB culture may be kept refrigerated for 6 months.”
- p. 17 Cho's Solutions · “Can be stored for up to 3 years at room temperature or centuries in a refrigerator”
