BV1 Plasma Viscometer

Key Features
  • Ideal for up to 50 samples per day
  • Fast turn-around
  • Direct sampling from primary blood tubes reducing biohazard risks
  • Uses same test as full blood count tubes, eliminating additional samples
  • Uses only 80 micro-litres of plasma (requires1 ml of whole blood)
  • Suitable for Paediatrics and Adults
  • Accommodates all leading blood collection tube manufacturers
  • Barcode reading at time of test
  • Automatic check and calibration with traceability and work records
  • Automated cleaning between every sample
  • Tests at 37°C, reports at 25°C or 37°C
  • Network interface capability
  • Operator password logon

Click on the picture left for a larger image

The BV1 has been designed to suit the testing requirement for 1-50 samples a day and is ideal for the smaller laboratory or speciality clinic looking for immediate results.

The BV1 viscometer only uses 80µl of plasma for its test, so the plasma viscosity measurement can be performed on the same collection tubes used for full blood count, eliminating the need for additional blood samples.

It is housed in a PC casing which thereby reducing the desk footprint. It can interface to another computer system to feed the results to central database.

All calibration and maintenance reagents can be supplied on contract or via ad-hoc orders.

Reagents for the BV1 are also available as a "Day Pack" where all calibrants and maintenance reagents necessary for up to 6 samples are provided in a convenient single package.


Test Request Form
About PV

Benson Viscometers Ltd is a British company that manufactures, distributes and maintains a range of clinical viscometers, tuned to analyse blood plasma viscosity.

The range includes a fully automated walk away high volume analyser (BV200) capable of processing 60 samples per hour for large laboratories and a semi automated analyser (BV1) suitable for small laboratories performing up to 50 samples a day.

The company also supplies a full range of control and maintenance reagents to give operators confidence in their results.


BV1 Unit
For confidence in your results

An increasing number of laboratories are electing to use Plasma Viscosity routinely in preference to erythrocyte sedimentation testing (ESR). This is because Plasma Viscosity results are easier to imterpret and results can be fully validated.

What They Say

"Benson Viscometers is the UK leader for plasma viscosity testing systems and we have had a long relationship with Bernie Benson. The BV1 is superbly engineered and easy to use, with a modified PC cabinet and a small footprint. Customer support is second to none." Graham Gibbs MSc CSci FIBMS, Lead Biomedical Scientist, Haematology Dept., Musgrove Park Hospital.

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BV200 Unit
Some PV Facts
  • Patient plasma viscosity (PV) is unaffected by patient anaemia or polycythaemia 
  • Samples can be analysed up to one week after centrifugation 
  • Test results are not affected by anti-inflammatory drugs 
  • Patient PV is not affected by age (>3 years), gender or smoking 
  • A rise of PV in the third trimester of pregnancy is predictable 
  • The only diagnostic test for plasma hyperviscosity