• elemental
Nitrogen Total (N) 15%
Nitrate nitrogen (N03-N) 4.5%
Ammoniacal nitrogen (NH4-N) 9.9%
Phosphorus (P) 4.8%
Water soluble 4.8%
Potassium (K) 12.4%
Water soluble 12.4%
Magnesium (Mg) 1.2%
Water soluble 1.2%
Iron (Fe) 0.06%
Water soluble 0.06%
Chelated by EDTA 0.06%
Manganese (Mn) 0.04%
Water soluble 0.04%
Chelated by EDTA 0.04%
Boron (B) 0.01%
Water soluble 0.01%
Copper (Cu) 0.010%
Water soluble 0.010%
Chelated by EDTA 0.010%
Molybdenum (Mo) 0.001%
Water soluble 0.001%
Zinc (Zn) 0.010%
Water soluble 0.010%
Chelated by EDTA 0.010%

Universol Sapphire



  • Prouduct Feature
  • Recommended rates
Prouduct Feature

Universol Sapphire is an ammonium based, fully water-soluble fertiliser with a balanced N: K ratio

• Excellent N:K balance
• Chelated trace element package
• Fast and complete solubility
• No residues in the stock solution
• Low dust
• Low in chlorine

Recommended rates

Recommended Universol rates for pot and bedding plants


100 % Universol

50 % Universol

50 % Osmocote

High Rate

1-2 g/l

0.5-1 g/L

Normal rate

1-1.5 g/l

0.5-0.75 g/L

Low rate

0.5-1 g/l

<0.5g/L or varies depending on situation


Recommended Universol rates for container nursery stock crops

High Rate

20 g/m2/week

10 g/m2/week

Crops with normal fertilizer requirements

15 g/m2/week

7.5 g/m2/week

Salt sensitive crops

10 g/m2/week

5 g/m2/week

Trial first on a small scale before rate, application or other changes in your cultural practices are implemented. As circumstances can differ and as the application of our products is beyond our control, ICL cannot be made responsible for any negative results. Always ask your ICL advisor for the best results.
Store under dry conditions. Partly used or damaged bags should be closed well.

Universol Sapphire is an ammonium-based, fully water-soluble fertiliser with a balanced N: K ratio. Universol Saphire is ideal for feeding most crops during the vegetative phase and can also be used during fruit production in crops that do not need high potassium. Universol Saphire contains mainly ammonium-N, which is the preferred source for crops such as blueberries. The inclusion of magnesium and a complete trace element package ensures excellent performance on a wide range of crops.