Description
calcined, purified
Synonym: Infusorial earth
Diatomaceous earth, diatomite, celite or kieselgur/kieselguhr is a naturally occurring, soft, siliceous sedimentary rock that can be crumbled into a fine white to off-white powder.
PROPERTIES
grade
reagent grade
form
powder
quality
calcined, purified
technique(s)
LPLC: suitable
surface area
2-3.5 m2/g
impurities
≤1% HCl-soluble matter
loss
≤1% loss on ignition
matrix
Silica
matrix active group
silica
particle size
125 μm
pore size
170000 Å mean pore size
anion traces
chloride (Cl–): ≤200 mg/kg
sulfate (SO42-): ≤1000 mg/kg
cation traces
Fe: ≤500 mg/kg
separation technique
hydrophilic interaction (HILIC)
![Universal indicator solution uniLAB, Merck [100ml]](https://idealmedical.co.za/wp/wp-content/uploads/2020/08/276-pH-indicator-soln-300x300.jpg)
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