I can't tell how pure the product was, but it looked very nice - small white crystals with no visible impurities. I bought this chemical to use on my fairly neglected orchids. I was a little wary - this is an acid, albeit a very weak one - so I sprayed several low value plants first and since nothing bad happened I continued to process my entire orchid collection. This product really seems to be working: 6 weeks after the first treatment my plants looked stronger, new leaves were growing and the existing buds had increased in size. Succinic acid was applied every time at least 2 days after fertilization, but I don't remember such an effect from a simple fertilizer. I got the impression that it acts as a booster. Succinic acid was dissolved in purified water (collected from the conditioner) at a concentration of 2 g/l and applied by late evening spraying every two weeks. Fertilizers for orchids were used a few days before the introduction of succinic acid. Safety goggles were worn when spraying the acid. 100 ml of solution is usually sufficient for most indoor plants.
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