wormvortex
New Member
Does this stuff go off? Can’t see any date on it but I’ve an opened bottle that’s probably been sitting for a year or two. Is it still good to use or not?
Give it a good shake, assuming that it doesn't have any precipitate in it? It is <"fine to use">.but I’ve an opened bottle that’s probably been sitting for a year or two. Is it still good to use or not?
It is <"fine to use">.
It may be fine to use in the sense that it's not likely to do any harm. But it could have been degraded due to light exposure. Particularly iron as a result of photoreduction. Yes/No?
Yes, the <"iron chelate"> can be photo-degraded by the light and once the ferrous (Fe ++), or ferric (Fe+++), ions are in solution they can combine with many other anions to form insoluble compounds.But it could have been degraded due to light exposure. Particularly iron as a result of photoreduction. Yes/No?
Been sitting in a cupboard for the most part and then in a bag in a shed so not in sunlight or anything.
On 21/06/2020 23:07, The Nutrient Company (Shopify) wrote
It chemically won't be much different from when I made it. I don't currently use expiry dates as I think they're often arbitrary and wasteful when blindly followed.
So generally common sense, eyes and nose. If it looks good, no mold has grown and smells OK - no sulpherous/foul/anaerobic odours.
It should be OK to use,
Nigel )
On 21/06/2020 23:07, The Nutrient Company (Shopify) wrote
Should be absolutely fine. Just have a look for precipitates.Been sitting in a cupboard for the most part and then in a bag in a shed so not in sunlight or anything.
Sensible answer.Fair play for them answering so quickly!