SANFRESH GT-800: Superabsorbent Polymer (SAP) for Soil Conditioner

Product Description
SANFRESH GT-800 is a new potassium polyacrylate (potassium-based superabsorbent polymer), designed as a soil amendment which improves water retention. It reduces runoff of pesticides and fertilizer. Improves drought resistance. It is beneficial for use on marginal lands.

Most superabsorbent polymers are SODIUM-based and harm plants by hindering absorption of calcium, an essential plant nutrient. SANFRESH GT-800 is POTASSIUM-based and does NOT inhibit plant growth. Effective lifespan in the soil is 2 – 4 years.

Application examples: Home gardening, turf, ornamental shrubbery, reforestation, etc.

Dosage recommendations

LAWNS AND SOD: 20-50 g/m2 (178-446 lbs/acre)
TREES AND SHRUBS: 2.5-5 kg/m3

Product Features

SANFRESH GT-800 is a POTASSIUM-based superabsorbent polymer that is particularly favorable for early plant growth, with a calcium absorbency that is approximately two-thirds that of other SODIUM-based products. Calcium absorbency is an indication of interference in calcium uptake by plant roots.

Table: Calcium Absorbency of each SAP Product

Test Method

Disperse 1 gram of SAP in 1 Litter of CaCl₂ aqueous solution with 200 mg/L calcium ion concentration. Stand it still under 25℃ for 48 hours, and skim the supernatant. Measure the calcium level by atomic absorption spectrometry, and then calculate the calcium ion absorption volume by concentration difference before and after the addition of SAP.

SANFRESH GT-800 improves the water retention properties of soil.

Test Method

Mix 5.0g/L of SANFRESH GT-800 with soil to a total of 2L. Fill this mixture in a pot. After that, pour 400g / day / pot (7 times in total). Keep it in thermo-hygrostat under 28℃ and RH50%. Figure the water content in soil by checking the pot weight variation. The test is run until the water content reaches 25wt%. We also tested the soil without GT-800 at the same time as a blank. The soil moisture content at which wilting occurs was approximately 25% (confirmed with bell pepper seedlings) as a guideline for watering.

SANFRESH GT-800 does not hinder plant growth.

Test Method

Prepare gel swollen 100 times with deionized water . Sow seeds on the gel. After 8 days, compare the growth situation.

Test Method

Prepare gel swollen 100 times with deionized water. Sow seeds on the gel. After 10 days, compare the growth situation.

Test Method

Prepare gel swollen 100 times with deionized water. Sow seeds on the gel. After 10 days, compare the growth situation.

Test Method

Prepare gel swollen 100 times with deionized water. Sow seeds on the gel. After 10 days, compare the growth situation.

Test Method

Prepare gel swollen 75 times with 1,000-time diluted liquid fertilizer solution(HYPONEX). Sow seeds on the gel. After 9 days, compare the growth situation.

Test Method

Prepare gel swollen 75 times with 1,000-time diluted liquid fertilizer solution(HYPONEX). Sow seeds on the gel. After 9 days, compare the growth situation. As a blank, evaluate gel swollen 75 times with deionized water at the same time.

How to Use

FAQ SAP for soil amendment/soil conditioner

GT-800 is a POTASSIUM-based SAP. It is designed for agricultural use.
GT-800 absorbs excess water and releases it to plant roots when needed.
GT-800 does NOT interfere with the absorption of calcium by plant roots.

Conventional SAP products are SODIUM-based.
They prevent plant roots from absorbing calcium, an essential plant nutrient.

GT-800 is POTASSIUM-based. It does NOT hinder plant growth.

2-4years (May vary depending on soil type, fertilizer additions, irrigation and rainfall.)

No. GT-800 does NOT interfere with the absorption of fertilizer components.
SANFRESH GT-800 absorbs water and fertilizer solutions, but the absorbed water and fertilizer solutions are fully supplied to the plants.

Patents for GT-800 have been applied for in Japan and the U.S.