Welcome
to Scienglass
BUY DIRECT FROM MANUFACTURER
* DO NOUY RINGS
* WILHELMY PLATES *TENSIOMETERS
*SURFACE TENSION MEASUREMENT ACCESSORIES
*SCIENTIFIC AND RESEARCH GLASSWARE
DU NOUY RINGS are sometimes
simply know as PLATINUM RINGS and we believe our quality
is of the very best. DU NOUY RINGS are normally available
ex stock. DU NOUY RINGS can be supplied in quantities from
as small as one off or in large numbers to customers’ needs.
DU NOUY RINGS are normally made to British Standards requirements
but can be made to your own design. DU NOUY RINGS consist
of a ring with a hook/or other support made in platinum
iridium alloy.
WILHELMY PLATES can also
be supplied to a standard or to your own design. WILHELMY
PLATES are small rectangles made in either glass or platinum
iridium alloy.
TENSIOMETERS usually come
in the form of a very sensitive balance measuring relatively
small forces. Usually scientists use a delicate mechanical
balance or fine electronic balance.
These three accessories
have individual uses in measuring surface tension in liquids
of different viscosities. They are made to very precise
weights and surface areas thereby fulfilling the requirements
of the standardisation agencies. Because of their precise
surface area when correctly used with a Tensiometer they
will give a standard coefficient of surface tension for
a liquid sample. They can obviously all be used for comparative
batch testing.
The mode of operation is that the
accessory (plate or ring) is attached on to the balance
and carefully lowered over a short distance to connect with
the surface of the liquid under test. A meniscus forms between
the Ring or Plate and the liquid surface. A precisely defined
force is then applied by lifting the Ring or Plate up from
the surface. The Balance or Tensiometer then reads the force
necessary to break the meniscus. This represents the coefficient
of surface tension of the sample.
The testing laboratories
of industries producing specific liquids commonly use this
equipment, eg lubricating oils, inks, coatings, food production
industries, paints, situations where a reproducible test
is required giving information on interfacial tension, miscibility,
solubility, emulsification etc, and are commonly used in
University and research teaching.
RESEARCH PROJECTS BY SCIENGLASS, PRODUCED
BY KEN CALKIN AT THE UNIVERSITY OF OXFORD.
- Glass heart simulator to facilitate the development
of new heart valves allowing observation function.
- A 5 metre Jacketed Glass Plasma Tube for research
on fusion and plasma technology.
- Large Electrochemical Vessels and glass Lasers of
various designs.
- Medical Research glassware.
- Assist in design and construction of glass research
equipment.
ANALYTICAL INSTRUMENTS
ACCESSORIES FOR SURFACE TENSION
MEASUREMENT
SCIENGLASS
makes and supplies components to many industrial companies
who are manufacturing and marketing their own complex instruments.
In the initial stages of instrument development we are happy
to be consulted and give advice on the glass technology
involved or work from your drawings bearing in mind that
there are approximately one million glass formulas.
Analytical instruments for specific chemical analysis
in laboratories such as forensic science, gas analysis apparatus
etc, where glass purity is essential.
SURFACE TENSION MEASUREMENT
The Food Industry uses various tests to maintain reproducible
quality and appearance. This can involve instruments for
measuring surface tension. Colorimeters for reproducible
appearance and of course biological apparatus to monitor
bacterial content etc.
ENVIRONMENTAL
SCIENCE
SCIENGLASS
produce some of the glass/metal instruments used in Environmental
Science, e.g.
GLASS TO METAL
SEALS INCLUDING RARE METAL TECHNOLOGY, VACUUM AND CRYOGENIC
WORK.
Glass engineers frequently become involved
in rare metal technology as sophisticated designs require
metals with specific properties to be used, e.g. lasers
use electrodes such as Tantalum, Tungsten, Platinum, Molybdenum
etc.
Platinum/iridium alloys are used where purity
plus rigid strength is required as in the fabrication of
surface tension equipment etc.
Very fine or microscopic
components are sometimes required as for example Langmuir
probes in wind tunnel experiments where fine Tungsten wire
is strung on a glass sub frame. By electrolysis in a suitable
alkali the Tungsten can be reduced evenly to as little as
0001” diameter.
Research glass fabrication is all
about techniques developed by individual technologists.
INDUSTRY
As well
as examples mentioned above SCIENGLASS is sometimes asked
to supply custom built scientific apparatus in metals, acrylics,
ceramics etc. High quality welding of common and rare metals
can often be supplied. Fabrication of rare metal electrodes
such as Tantalum, Niobium, Platinum and Platinum Iridium
etc is a speciality.
EXPORTS
SCIENGLASS exports
to Spanish speaking countries as the Directors are experienced
in the language and enjoy both cultural and scientific contacts.
If you prefer please use Spanish to explain your requirements
or make enquiries.
We also export to many other countries
and are always happy to give quotations.
Please do not
hesitate to email enquiries@scienceglass.com
for more information.
TELEVISION
AND FILM
SCIENGLASS
is frequently consulted on the manufacturing of glass items
used in these industries particularly in the television
advertising field where glass has proved to be an immensely
useful material. Speed of supply is essential as film sets
can cost many thousands of pounds per day to maintain. We
therefore endeavour to meet Directors’ deadlines, which
may sometimes be within hours.
DEFENCE INDUSTRY
The
UK Defence Industry has always been among the world’s best.
Glass engineering and technology plays a significant part
in this.
Corrosion Science is widely used in rocket
science and research, which involves a wide range of specialised
devices for measurement of corrosion rates in metals and
other substances. This necessitates an inventive and creative
approach in the construction of glassware used in the field.
Image Tubes such as Image Intensifiers and other optical
systems and vacuum tubes are also commonly used.
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