6.10 Filtration Apparatus, of the type shown in Fig. 2. It consists of a funnel and a funnel base with a filter support such
that a membrane filter can be gripped between the sealing surface and the base by means of a locking ring. Use a metal
funnel with at least a 70-mm diameter at the top.
6.11 Support Apparatus, as shown in Fig. X3.1, having
adjustable height, integral spill collection pan at the base, and
an edge on the can shelf to prevent the can from slipping off.
The shelf is slotted. Refer to Appendix X2 for fabrication
details.