A Micro Ultrafiltration Apparatus

Simple ultrafiltration apparatus.

All ultrafiltration devices have in common a semipermeable membrane and a means for creating a pressure difference across it. They differ only in the configuration of the membrane, the nature of the force used to create a pressure difference, and the ease with which the environment of the plasma can be controlled so as to simulate physiological conditions. Speed of producing ultrafiltrate provi...

A new micro-respirometer with automatic setting and recording apparatus.

The instrument was designed to measure the O2 uptake of living material which consumes between o-oi and 5-0 yl. O2/ hr. Its accuracy is +o-ooi /u.1., and it has the following advantages over other micro-respirometers of similar sensitivity. (a) It is robust, easy to handle and is suitable for routine use. (b) The respirometer constant is independent of the gas volume of the reaction vessel. (c)...

A steam distillation apparatus suitable for micro-Kjeldahl analysis.

Micro- and Ultrafiltration Performance Specifications Based on Microbial Removal

BACKGROUND: Both UF and MF have the capability to remove viruses (and submicron bacteria); however, the extent of removal is based on a number of factors including the membrane and the organism, as well as water quality and operational conditions. If membranes are to be employed on a more widespread basis for microbial removal, then their classification should be based on their ability to remov...

A Uniform Pressure Apparatus for Micro/Nanoimprint Lithography Equipment

Nanoimprint lithography (NIL) has overcome the limitation of light diffraction. It is capable of printing features less than 10nm in size with high lithographic resolution, high manufacturing speed, and low production cost. The uniformity of pressure, however, remains a critical issue. To improve the uniformity of pressure, we developed a flexible uniform pressure component based on Pascal’s La...