Liquid Nitrogen freezers used for maintaining cells in the gas phase of the nitrogen, must be designed to ensure that heat input from the access opening does not compromise the temperature at the top of the gradient. In addition to the required insulating properties of the units, narrow access openings minimize warming during storage and retrieval activities. The depth of liquid nitro...
Many production samples such as sauces, jams, baby foods, cosmetics and paints when being tested in the laboratory before going to market require consistency checks against particular flow rate standards. The Bostwick Consistometer is used world-wide to determine sample consistency by measuring the distance which a material flows under its own weight in a given time interval. The ''Bo...