FISHER SURFACE TENSIONMAT 21 판매합니다
장비상태 새장비에 준 합니다
RING 2개 있읍니다
For 115V 50/60Hz 0.2A

연락처 011-354-6248


Fisher Semiautomatic Model 21 Tensiomat* Tensiometer
Reversible motor for improved accuracy compared to manual tensiometers
Improved accuracy direct readings


Semiautomatic Tensiomat performs ASTM D 971-99a (oil-water interfacial tension procedures) and D 1331-89 (methods for measuring surface and interfacial tension of detergents)
Employs du Noüy ring method for direct results with no calculations
Accuracy equals data from capillary-height or drop-weight measurements to within ±0.25%
Measures force necessary to separate platinum-iridium ring from liquid read directly to ±0.25 dynes/cm
For comparative studies data is easily convertible to absolute values using graph in supplied instructions


Description

Reproducible semiautomatomatic operation


Reversible synchronous motor raises and lowers test ring and sample table
Two-way switch selects travel direction for ring and pilot light
Provides movement at a uniform rate eliminating premature ring breakaway from liquid and preventing false tension readings
Error from manual adjustment of sample level can be avoided by first running test with motor off to determine sample position when ring breaks free then allowing table to remain fixed at that position for actual tests