Technical data

Hardness of water

Article no: P7155201

Principle

Drinking water can be classified according to the fraction of (above all) calcium and magnesium salts into hard and soft water. On heating, lime (calcareous fur) precipitates out of hard water. Calcium soap is redissolved by water softening agents.

Benefits

Experiment guides are very easy to understand, especially for younger students
Associated competences are directly linked to the experiments
Curriculum compatible
Fit for the future: implementation of tablets possible

Scope of delivery

Beakers, Boro, low form, various sizes	46054-00	2
Graduated cylinder, 25 ml, transparent, PP	36635-00	1
Test tube, laboratory glass, various lengths, 100 pcs.	37656-10	1
Rub.stop.d=12.5/16.5mm,w/o hole	39249-00	3
Test tube holder, up to d 22mm	38823-00	1
Spoon,stainless steel,210mm	40874-00	1
Dropping pipette with bulb, 10pcs	47131-01	1
Glass rod, boro 3.3, l=200mm, d=5mm	40485-03	1
Protecting glasses, clear glass	39316-00	1
Laboratory pen, waterproof, black	38711-00	1
AQUADUR-Test sticks Water hardne.	47020-01	1
Water, distilled 5 l	31246-81	1