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Rubber Bladder
Rubber Bladder
Our Price: £12.00

Rubber bladder are used for pressurising dewars in the transfer of liquid helium.

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Liquid Helium Dipstick
Liquid Helium Dipstick
Our Price: £140.00

This simple, yet effective dipstick provides accurate indication of liquid helium depth. Stainless steel construction with a fine rubber diaphragm, held in place by an ‘O' ring over the cup-shaped upper end of the dipstick. The dipstick length is 1.5m.

The thermal gradient created in the tube leads to thermal oscillations, which are felt by the vibration of the membrane. The frequency of the oscillation with the lower end in liquid helium is noticeably lower in comparison to that when in cold gas, allowing the liquid level to be easily determined (in most cases).

The dipstick should not be left in the cryostat when it is not in use because it introduces a large amount of heat.

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Dewar Top Fitting - Euro SV10 (3/8")
Dewar Top Fitting - Euro SV10 (3/8")
Our Price: £220.00

For interfacing the dewar with a transfer tube. more info
Dewar Top Fitting - Euro SV12 (1/2")
Dewar Top Fitting - Euro SV12 (1/2")
Our Price: £260.00

For interfacing the dewar with a transfer tube. more info
Helium and Nitrogen Storage Dewar Pump Out Fitting
Helium and Nitrogen Storage Dewar Pump Out Fitting
Our Price: £390.00

The pump out fitting allows evacuation of all our transfer tubes except those fitted with a KF16 flange. more info
Replacement Auto Needle Valve Stepper Motor
Replacement Auto Needle Valve Stepper Motor
Our Price: £499.00

A replcaement motor for the Auto Needle valve assembly. more info
Auto Needle Valve Upgrade Kit
Auto Needle Valve Upgrade Kit
Our Price: £940.00

This upgrade kit, for use with the LLT transfer tubes, enables automated cryogen flow control. The kit comprises a motor/gear box assembly, which replaces the manual adjustment knob. A supplied interface cable connects the motor to an Oxford Instruments temperature controller. The temperature controller determines the proper cryogen flow and heater current to obtain optimum cryostat performance at the established temperature target. Thus the automated needle valve provides hands-off cryostat operation from 2 K to 500 K. more info
Nitrogen Side arm for transferring N2 into CF Cryostats
Nitrogen Side arm for transferring N2 into CF Cryostats
Our Price: £1,200.00

Liquid nitrogen side arm for transferring LN2 into continuous flow (CF) cryostats, for use in place of TTL/LLT LHe transfer tube. more info