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Page 123 Stuart® Catalogue
W4000
Water Stills, Merit
W4000
The Merit is the ideal choice for budget conscious laboratories
that can’t afford to compromise on quality. It combines economy
and high performance with a host of other features which
comparable stills cannot match.
Built in acid addition funnel and drain stopcock allow easy
descaling without dismantling the glassware.
The unique condenser design ensures that the droplets of distilled
water remain in contact with the cooling coil for the longest
possible time producing cold distilled water and pre-heating the
boiler feed to increase efficiency.
Screwthreads are incorporated on all water connections so
hoses can be fitted and removed easily and safely without risk
of breakage. Safety features include two independent safety
thermostats to prevent over heating in the event of failure of the
water supply. The stand is pre-drilled to facilitate wall mounting.
Technical Specification
Output 4 litres/hr, single distilled
pH 5.0 – 6.5
Conductivity, µScm-1 3.0 – 4.0
Resistivity, mOhm-cm 0.25 – 0.3
Temperature 25 - 35°C
Pyrogen content * Pyrogen free
Water supply 1 litre/min
3 – 100psi
(20-700kPa)
Electricity supply 220 or 240V, 50-60Hz, single phase
Power requirement 3kW
Dimensions, mm (w x d x h) 500 x 150 x 450
IP Rating 31
* care is required to produce pyrogen free water and the output
should be tested before use.
Conductivity and resistivity are affected by the presence of
dissolved carbon dioxide. All figures given in this catalogue are
based on tests carried out on the still output at 20°C and free
from carbon dioxide.
Model Description
W4000 Merit water still, 240V
W4000/EURO Merit water still, 220V
Ordering Information
• Economical price
• Glass construction with long life metal heating
element
• Two independent safety thermostats
• Wall mountable
Key Features