For examining living microorganisms such as bacteria and yeast in hanging drops Medium thick slides For examining living microorganisms such as bacteria and yeast in hanging drops 1.4 to 1.6mm thick Concavities ground and polished; 18mm diameter; 0.5 to 0.8 mm deep Extra thick slides For larger specimens With very thick glass (3.12 to 3.22mm) and concavities Order Info Size: 76 x 26mm.