Suitable for filtration of tissue culture media and laboratory buffers, Autovial syringeless filters are available to biological researchers in a .2 um pore size in both sterile and nonsterile forms. The devices consist of a prefilter, a membrane filter, and a syringe in one disposable unit. Membrane options include PVDF, Nylon66, or PTFE. Each ifitration unit can filter as much as 12 ml of sample. Prices depend on the quantity purchased and range from $1.10 to $2.10 per nonsterile filter and from $1.25 to $2.38 per sterile filter.
Circle No. 422 on Reader Service Card
In chemistry labs, a robot can now replace manual and automated methods of performimg chemistry synthesis for positron emission tomography (PET). The robot per forms the same functions as a technologist—repetitive chemical syntheses and dispensing. By using inexpensive, disposable glassware, the robot eliminates washing of glassware and limits the danger...