Gonotec Gmbh, Germany

OSMOMETER 050 AUTOMATIC COLLOID OSMOMETER

OSMOMAT 050 AUTOMATIC COLLOID OSMOMETER for measurement of oncotic and respectively the colloid osmotic pressure (COP) from small sample volume with measurement value in mmHg or cm water column or K-Pascal.

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DESCRIPTION

OSMOMAT 050 AUTOMATIC COLLOID OSMOMETER for measurement of oncotic and respectively the colloid osmotic pressure (COP) from small sample volume with measurement value in mmHg or cm water column or K-Pascal.

MEASUREMENT PRINCIPLE

The colloid-osmotic pressure is measured by means of an osmotic cell. The lower half of the osmotic cell is closed off to the environment and is filled with electrolyte-containing Ringer’s solution. The upper half of the cell is open to the environment and is filled with a colloid- containing solution.

The two halves of the cell are separated from each other by a semipermeable membrane. This membrane possesses defined pores through which only water and electrolyte molecules can permeate.

Due to the osmotic pressure differential of the two solutions, solvent permeates from the lower into the upper half of the measuring cell until an equilibrium is reached between the under pressure in the lower half of the cell and the osmolal concentration of the colloids. An electronic pressure measuring system, which is mounted into the lower half of the cell, transduces the underpressure into an electric signal, which is shown on a digital display.

MAJOR MERITS

Minimum sample volume requirement in its category, equally suited for paediatric and geriatric cases

Problem free simple injection of serum or plasma solution for measurement

Automatic zero setting offering greater convenience

Display of the result with storage of second value measured, for cross check of the equilibration of the system

Simple and inexpensive calibration with hydrostatic pressure differential measurement

High performance measuring cell

Measuring time of less than a minute

User selection of the pressure unit mmHg /cm water column /K-Pascal for easy adaptation

Automatic rinsing of the measuring cell after each measurement

Automatic stand by function for easy and quick start up

MEASUREMENT VOLUME

<10µl

SAMPLE VOLUME

>100µl

DURATION OF MEASUREMENT

1-3 Minutes, Depending on membrane type

MEASUREMENT FORMAT

99.9 mm Hg, 9.99 k-Pascal

REPRODUCIBILITY(50µl)

<± 0.5 mm Hg

SIGNIFICANT FIGURES

3 places

ZERO POINT DETERMINATION

Automatic

MEMBRANE MATERIAL

Two layered membrane, each layer is able to retain compounds with molecular weight > 10,000 – 30,000 Dalton

RECORDER OUTPUT

2mV/Digit, ±10%, can be set for recorder compensation with 1 Volt output

MEASUREMENT

Direct pressure measurement via difference in hydrostatic pressure

AUTOMATION

1. Stand alone wash of the upper half of the cell is available to prepare the cell

2. Storage of the results

3. Storage of all data values over a specified time period after the first measurement

CLINICAL APPLICATIONS

Very useful for routine use in intensive care units

Ideally suited for applications in direct control of infusion therapy

Diagnostic value with measurement of COP in cases of blood loss, hypal-buminaemia, albumin therapy, during lung edema and in all diseases causing shift in colloid osmotic pressure

To know more about Osmometer 050 Automatic Colloid Osmometer:

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