Purchase laser particle size analyzer need know points

1) What materials need test? 

If suspension/emulsion, must choose liquid dispersion particle size analyzer, and some materials are also reacted with water, so need liquid dispersion particle size analyzer also.

Generally, cement, metal powders and pharamcy materials need dry dispersion model particle size analzyer.

2) What size range need test?

By now, Based on MIE scattering, laser particle size analyzer can test the particle range is 0.01um-2000um.

If materials range is not so wide, for example, 10um-20um, smaller range of particle size distributon choose closer range model will be preciser, no need to buy large range model.

3) What is dispersion media?

For liquid model, in order that sample can  disperse well and circulate in the laser particle size analyzer, generally we need use water, alochol or organic solvent as dispersion media.

For dry dispersion model, just use compressed air as dispersion media.

In the current market, Dry laser particle size analyzer cost is higher than liquid dispersion models, so if can test well, liquid model is better.