THE NEW NALGENE^

FILTER HOLDER SYSTEM. VERSATILE, SIMPLE,

LONG-LASTING. The new reusable Nalgene Filter Holders are available w i th either a receiver, for filtering up to 250 mL, or w i th a funnel, for use w i t h manifolds. They com­bine all the performance and convenience features you wan t in a single mem­brane filtration system.

EXCLUSIVE: TWO MEMBRANE SUPPORT PLATES Each Nalgene Holder is supplied w i th a sterilization plate for fast f low-through, and an analysis plate, to maintain the perfectly flat membrane needed for ana­lytical work.

INTERCHANGEABLE UPPER CHAMBER Upper chamber can be used w i th either receiver or funnel. For economical con­version of Holder and Receiver to a filter funnel, ask for the Nalgene Funnel Conversion Assembly.

TOUGH POLYSULFONE CONSTRUCTION Nalgene Filter Holders are made of trans­

parent polysulfone, the rugged plastic that withstands far more cycles in the autoclave than units made of polycarbonate.

EASY TO USE Holders are designed to be simple to use

for either vacuum or pressure filtration.

LOCKING RING COUPLING SYSTEM Forms a t ight seal between upper and lower chamber w i thout twisting

or damaging the membrane.

AVAILABLE FROM LAB SUPPLY DEALERS EVERYWHERE Ask for the Nalgene Filter Holder w i th Receiver (Cat. No. 300-4000) or Filter Holder w i th Funnel (Cat. No. 3KM000J.

For more information, wri te or call us: Nalgene Labware Department, Nalge Company, Box 365, Rochester, N e w York 14602. Telephone (716) 586-8800; Telex 97-8242.

Sterilization and analytical support plates

Nalge

Conversion Assembly (Cat. No. 3054000)

SYBRON CWCLE 155 ON READER SERVICE CARD

tking ring ipling system