Where to source materials for STS
- Thread starter SBNDB
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coreywebster
Well-Known Member
Ebay
CaptainCAVEMAN
Well-Known Member
What is the mixture rate for 1 quart of spray?
go go kid
Well-Known Member
dont know about a liter, but here's how its made into a stock solution
Silver Thiosulfate – Plant Tissue Culture Protocol
Prepare a 0.1 M Sodium Thiosulfate (STS) stock solution by dissolving 1.58 g of Sodium Thiosulfate (Product No. S7026) into 100 mL of water. Prepare a 0.1 M Silver Nitrate stock solution by dissolving 1.7 g of Silver Nitrate (Product No. S7276) into 100 mL of water. Store the stock solutions in the dark until needed to prepare the STS.
In general, the STS is prepared with a molar ratio between silver and thiosulfate of 1:4, respectively. Nearly all of the silver present in the solution is in the form of [Ag(S2O3)2]3-, the active complex for ethylene effect inhibition.
Prepare a 0.02 M STS by slowly pouring 20 mL of 0.1 M silver nitrate stock solution into 80 mL of 0.1 M sodium thiosulfate stock solution. The STS can be stored in the refrigerator for up to a month. However, preparation of the STS just prior to use is recommended.
Silver Thiosulfate – Plant Tissue Culture Protocol
Prepare a 0.1 M Sodium Thiosulfate (STS) stock solution by dissolving 1.58 g of Sodium Thiosulfate (Product No. S7026) into 100 mL of water. Prepare a 0.1 M Silver Nitrate stock solution by dissolving 1.7 g of Silver Nitrate (Product No. S7276) into 100 mL of water. Store the stock solutions in the dark until needed to prepare the STS.
In general, the STS is prepared with a molar ratio between silver and thiosulfate of 1:4, respectively. Nearly all of the silver present in the solution is in the form of [Ag(S2O3)2]3-, the active complex for ethylene effect inhibition.
Prepare a 0.02 M STS by slowly pouring 20 mL of 0.1 M silver nitrate stock solution into 80 mL of 0.1 M sodium thiosulfate stock solution. The STS can be stored in the refrigerator for up to a month. However, preparation of the STS just prior to use is recommended.
HenryTheEighth
Well-Known Member
Kropduster.com
Sts - $45
Cpappa27
Well-Known Member
I use colloidal silver straight out of the bottle no dilution. If you get 30 ppm just try and spray it twice a day. Around 60 ppm is the more common dosage in common brands.
Cpappa27
Well-Known Member
You can also make your own real cheap with some distilled water and a silver bar some sort of pure silver to attach the clips to. I probably use a cup or so total the whole process on one plant.
