New at NCL

Prewashed and Preweighed Glass Fiber Filters

Each pre-treated filter comes in an aluminum pan with the filter weight clearly noted.

 

First, place the 934-AH® RTU on the funnel of the vacuum filtration apparatus and
seal the filter to the funnel by wetting with a small amount of water. Then, filter your sample. Finally, wash the filter with three aliquots of 10 ml reagent grade water.

 

 

 

 

Remove the filter, return it to the aluminum weigh pan and dry it to constant weight at 103°C to 105°C. To obtain the weight of total suspended solids, subtract the weight of the filter indicated on the pan label from the final weight.

 

 

 

 

 

Diameter	NCL #	Price/pk
42.5 cm	RTU-93442	84.50
47 cm	RTU-93447	72.50
55 cm	RTU-93455	79.00