kieserite powder for fertilizer

Product name: Kieserite powder:

Size: 10-100mesh or 0.1-1mm;

Usage: the best fertilizer for magnesium and sulfur.

Package: 25kg bag or 50kg bag or jumbo bag.

The Mg and S content in kieserite powder:

PH value testing method of kieserite powder:

Experimental equipment: beakers, straws, electromagnetic stirrers, pH testers, and other commonly

used laboratory equipment.

Reaction solution: distilled water (previously boiled on the day of the experiment), PH4, PH7, PH9

standard buffer reagents (service life cannot exceed one year)

Operation method:

1) Weigh 10g of fresh sample, put it into a beaker, add 100ml of distilled water, add a magnetic rod,

and stir for 30 minutes on a stirrer;

2) Pre calibrate the pH tester with standard buffer reagents of PH4, PH7, and PH9, and immediately

measure the stirred sample solution.

Test Method for Water Soluble Sulfuric Anhydride (SO3) (Drying Method)

1- Preparation of sample solution:

Take 1 gram and grind it to 200 beforehand μ Place the sample of m (=0.2mm) in a 600mL beaker,

add 400mL desalted water, boil for 30min, cool it, transfer it to a 500mL volumetric flask, dilute it with

water to the scale, shake it well, dry filter it, and discard the first few milliliters of filtrate.

2-Precipitation reaction

Take 100mL of the above filtrate, place it in a 600mL beaker, add 300mL of desalinated water, and

then add 20mL of HCL, heat it to the boiling point;

Slowly add 20mL of barium chloride solution while stirring, and boil again for 5 to 10 minutes;

3- Drying

Move the filter screen and sediment together into a crucible (the crucible needs to be weighed in advance),

place it in an oven, bake at 800 ° C for 30 minutes, take it out and place it in a drying oven for cooling, and

weigh it.

4- Calculation results