PureCal Calcium Nitrate Fertilizer — 13-0-0 + 18% Ca | 55 lb Bag
When purity matters, growers reach for PureCal. This hydroponic-grade calcium nitrate delivers a clean, fully soluble source of nitrate nitrogen and calcium — with zero ammonium (NH₄). Made in the USA, it is the go-to choice for commercial greenhouse operations, recirculating hydroponics, and pure water culture systems where ammonium buildup can disrupt pH balance or harm sensitive root zones.
The 55 lb. bag is built for serious production — delivering the same pharmaceutical-grade purity at a scale that keeps commercial operations running efficiently and cost-effectively.
Key Benefits
- 100% nitrate nitrogen — no ammonium, ideal for recirculating and NFT systems
- 18% calcium — supports strong cell walls, reduces tip burn, and improves fruit quality
- Highly pure white crystals — dissolves completely and rapidly in water with no residue
- Precise dosing — 1 gram per gallon yields 34.32 ppm nitrate-N and 47.52 ppm calcium
- Made in the USA — trusted by professional growers across the country
- Versatile — compatible with drip, NFT, DWC, ebb-and-flow, and foliar applications
Ideal Applications
- Commercial greenhouse and controlled environment agriculture
- Recirculating hydroponics and pure water culture
- High-value crops sensitive to ammonium toxicity
- Fertigation systems and foliar spray programs
Product Details
- Analysis: 13-0-0 + 18% Ca
- Net Weight: 55 lb bag
- Nitrogen Form: 100% nitrate (ammonium-free)
- Solubility: Fully water-soluble
- Origin: Made in the USA
- Brand: PureCal by The Andersons
Documents
- High Analysis: PureCal has a higher calcium to nitrogen ratio than other calcium nitrate products.
- Pure: All nitrogen is in the nitrate form. It contains no ammonium (NH4) nitrogen.
- Water Soluble: Easily and totally soluble in water.
| pH | (10% solution) 6.5 |
| Water insolubles | 0.0% |
| Melting point | 51° C. (122°-126° F.) |
| Specific Gravity | 1.84 g/ml (@ 130° F.) |
| Bulk Density | 58-63 lbs./ft.3 |
| Typical Analysis | Units | |
| Calcium content (as Ca) | 18.3% | wt./wt. |
| Calcium content as calcium oxide (CaO) | 26% | wt./wt. |
| Ammonium nitrogen content (NH4 ) | 0% | wt./wt. |
| Nitrate nitrogen content (NO3 ) | 12.8% | wt./wt. |
| Total nitrogen (N) | 12.8% | wt./wt. |
| Copper (Cu) | n.d. | ppm |
| Iron (Fe) | n.d | ppm |
| Manganese (Mn) | n.d | ppm |
| Lead (Pb) | n.d | ppm |
| Cadmium (Cd) n.d | n.d | ppm |
| Nickel (Ni) | n.d | ppm |
| Chromium (Cr) | n.d | ppm |
| (n.d.: none detected) | ||
PureCal 13-0-0 Calcium Nitrate | 55 lb Bag
PureCal 13-0-0 Calcium Nitrate | 55 lb Bag
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