Elementary chemical microscopy (1921) Elementary chemical microscopy elementarychemi00cham Year: 1921 METHODS FOR HANDLING SMALL AMOUNTS OF MATERIAL 297 crucibles require a special support during ignitions casseroles will be found more convenient. Grinding, Crushing, Mixing. — For grinding and crushing materials for analysis, the smallest available agate mortars are best. One not larger than 30 millimeters in diameter, Fig. 159, Fig. 159. Agate Mortar for Microchemical Analysis. (Full Size.) should be selected. It must be carefully scrutinized with a lens to see that its inner surface is p
Elementary chemical microscopy (1921) Elementary chemical microscopy elementarychemi00cham Year: 1921 METHODS FOR HANDLING SMALL AMOUNTS OF MATERIAL 297 crucibles require a special support during ignitions casseroles will be found more convenient. Grinding, Crushing, Mixing. — For grinding and crushing materials for analysis, the smallest available agate mortars are best. One not larger than 30 millimeters in diameter, Fig. 159, Fig. 159. Agate Mortar for Microchemical Analysis. (Full Size.) should be selected. It must be carefully scrutinized with a lens to see that its inner surface is properly polished and is free from fissures, pits and scratches. A mortar made from a first quality piece of agate, if properly cared for, should last a lifetime.
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