CorePotassium Nitrate Granular Lab Grade
Lab Grade
Best for: potassium and nitrogen in nutrient solutions
Industry · Food, Agriculture & Consumer
Chemicals for Agriculture, Hydroponics & Soil Testing
Nutrient salts, micronutrients, chelates, pH adjusters and sanitizers in Lab/Technical, ACS and USP grades — with lot COAs, SDS online, and sizes from a pint to a 275-gallon tote.
What you need at each step
From mixing nutrient solutions to running soil tests, pick raw materials by the job they do. Each one links to its product page with grades, sizes and documents.
- 01
Macronutrients
Nitrate salts supply nitrogen, potassium and calcium for nutrient solutions and blends.
- 02
Micronutrients & chelates
Trace metal salts and EDTA chelates keep zinc and iron available to plants.
- 03
pH & water conditioning
Acids and bases adjust irrigation water and reservoir pH into the target range.
- 04
Soil amendments
Sulfur lowers soil pH; calcium carbonate raises it and adds calcium.
- 05
Sanitation & line cleaning
Oxidizers clean irrigation lines, drippers, reservoirs and greenhouse surfaces between crops.
- 06
Soil & tissue testing
Concentrated acids digest soil and plant tissue samples for nutrient analysis.
Recommended for agriculture
Core — used by most buyers Supporting — process-dependent
Core
Core
Core Supporting
Supporting Core Core
Supporting
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SupportingPotassium Hydroxide, 40% Solution, Lab Grade
Lab Grade
Best for: raising reservoir and stock solution pH
Core
Supporting
CoreHydrogen Peroxide 34% Food Grade, Kosher, Halal
Food Grade
Best for: cleaning drip lines and reservoirs
Supporting
Supporting
SupportingSulfuric Acid 96% ACS Reagent Grade Solution (95-98%, Concentrated H2SO4)
ACS Grade
Best for: nitrogen digestion in soil labs
Which grade fits your operation?
Grade tells you purity, not whether a product is a registered fertilizer. Match the grade on the label and COA to where the chemical is used — in the field, in the reservoir, or in the lab.
See our certifications →| Grade | What it means | For nutrient blending | Typical use |
|---|---|---|---|
| Lab/Technical | Lab or industrial purity at a lower cost per pound | Yes — check COA | Field blends, soil amendments |
| ACS | Meets American Chemical Society reagent specifications | Yes | Hydroponics, soil and tissue testing |
| USP | Meets United States Pharmacopeia purity and identity standards | Yes | High-purity and specialty blends |
| FCC/Food | Meets the Food Chemicals Codex monograph for purity and identity | Yes | Food-contact and post-harvest steps |
| Reagent | Standardized solutions made for analytical methods | No | Lab titration and calibration |
What growers and blenders check before they buy
- Assay & hydrate form
- Anhydrous, monohydrate and heptahydrate salts deliver different nutrient amounts per pound — adjust your recipe.
- Solubility
- Fertigation and hydroponic systems need salts that dissolve fully without clogging emitters.
- Heavy metals & impurities
- Trace contaminants build up in soil and recirculating systems — check the lot COA.
- Particle size
- Powder, crystal and granular forms dissolve and spread differently in mixing tanks and fields.
- Compatibility
- Calcium salts can precipitate with sulfates and phosphates; mix them in separate stock tanks.
Paperwork for your operation
SDS library Every product, online before you order. Certificate of Analysis Lot-specific COA for your records. Certifications Kosher, Halal, Organic and RSPO on select products. Spec sheets & statements Ask customer care for product specifications and origin details.
These products are sold as chemical raw materials, not registered fertilizers or pesticides, so follow product labels and your state's fertilizer and pesticide rules, and confirm requirements with your regulatory or safety advisor.
From test plot to full season
Same grade, same documentation at every size. Trial a recipe on a small pack, then scale to drums and totes for the growing season.
1 pt Soil lab / trial
1 gal Greenhouse test
5 gal Small grow
55 gal Drum
275 gal Tote
Agriculture buyer questions
Are these products registered fertilizers or pesticides?
No. Lab Alley sells these chemicals as raw materials. Growers and blenders use them to make their own nutrient solutions and should follow product labels and their state's fertilizer and pesticide rules.
Which grade should I use for hydroponics?
Many growers use Lab/Technical grade salts for cost, while others choose ACS or USP for tighter impurity limits in recirculating systems. Check the lot COA against your nutrient recipe.
Why does hydrate form matter for nutrient salts?
Hydrated salts carry water weight, so a heptahydrate supplies less metal per pound than a monohydrate. Adjust your recipe to the form you buy.
Can I get a COA for each lot?
Yes. A lot-specific Certificate of Analysis and the SDS are available for every product.
Do you supply soil and plant tissue testing labs?
Yes. We carry ACS-grade acids, extraction salts and reagents used for sample digestion and nutrient analysis.
Do you offer bulk pricing for seasonal volumes?
Yes. Request a quote for drums, totes or recurring volumes, or call 512-668-9918. Some chemicals ship only to commercial addresses.
Related Industries
Planning next season's inputs?
Get drum and tote pricing, lot COAs and a dedicated contact for recurring orders.