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Circulators – Grant

CIRCULATORS

Refrigerated Circulators – Grant LTD series

Compact circulators with stainless reservoir tank and integral refrigeration unit utilising ozone-friendly R134A refrigerant. Immersed parts are manufactured from stainless steel and Ryton fire-retardant plastic, with nickel-plated copper cooling coil.The control unit has a liquid crystal display, desired temperature being set by pushing in the control knob and turning until the required temperature is displayed. When the knob is released the actual bath temperature is displayed. Low liquid level protection and adjustable high and low temperature protection devices are fitted.

Circulators are supplied complete with a flat stainless steel lid with plastic handle.

Specification

 Model                       LTD6G               LTD20G

Temp range                   -20 to +100         -30 to +100
Display resolution           +/-0.1              +/-0.1
Sensitivity                  +/-0.02             0.02
Stability                    +/-0.015            0.02
Uniformity                   +/-0.02             0.05
Cooling capacity W           140                 560
Pump max flow ltr/min        8.5                 8.5
Pump max head m              1.7                 1.7
Tank volume liters           6                   20
Top opening lxh mm           120x145             200x290
Dimensions lxwxh mm          395x225x505         470x390x630
Weight Kg                    24                  50
Heater load kW               1.4                 1.4
Electrical requirements      240v 50hz 1.8kW     240v 50hz 2.1kW

Ordering Information
C29-180 – Refrigerated circulator Grant model LTD6G – £1629.00
C29-190 – Refrigerated circulator Grant model LTD20G – £2535.00

For more inrofmation please visit http://www.jepbol.com/sect1/circ.html

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Categories: Uncategorized Tags: Circulators, Circulators - Grant, grant, LTD20G, ltd6 circulator, LTD6G

Phosphate Sodium buffer Chart

Phosphate (Sodium) buffer Chart
Stock solution A

2 M monobasic sodium phosphate, monohydrate (276g/L)

Stock solution B

2 M dibasic sodium phosphate (284 g/L).

Mixing an appropriate volume (ml) of A and B as shown in the table below and diluting to a total volume of 200 ml, a 1 M phosphate buffer of the required pH at room temperature.

A B pH

92.0 8.0 0.8

90.0 10.0 5.9

87.7 12.3 6.0

85.5 15.0 6.1

81.5 19.5 6.2

77.5 22.5 6.3

73.5 26.5 6.4

68.5 31.5 6.5

62.5 37.5 6.6

56.5 43.5 6.7

51.0 49.0 6.8