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DAWN SCI Potassium Nitrate is a 99.7% pure saltpeter (KNO3) sold as a water-soluble source of nitrogen and potassium for plants. It dissolves cleanly and supplies two primary macronutrients without chloride, which suits fruiting and flowering crops and hydroponic mixes. Compared with general-purpose fertilizers it is a single-ingredient product, so you dose it yourself rather than rely on a blended NPK ratio. Buyers rate it well for purity and mixing, though the small tub and the need to measure your own rates come up.
In stockSold by Dawn Scientific IncReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
Availability unknown
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Lowest price we've seen: $18.62 on Nov 11 at Amazon. Tracked across 1 store since Nov 11.
Buyers rate it 4.4 out of 5 and mostly praise its purity and how well it dissolves. Complaints center on the small quantity and the lack of detailed dosing instructions.
DAWN SCI Potassium Nitrate is a chemical compound with the formula KNO3. It is an ionic salt of potassium ions (K+) and nitrate ions (NO3−), which makes it an alkali metal nitrate. It occurs in nature as a mineral called niter and is one of several nitrogen-containing compounds known as saltpeter.
This product is 99.7% pure or higher. It is a source of both potassium and nitrogen, two essential primary nutrients for plants, and is designed for plant nutrition. Its major uses are in fertilizers and tree stump removal, among other uses.
