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Online Catalogue |  Diagnostics |  Urinalysis Reagent Strips |  Medi-Test MED137 Combi-10SGL Test (g, p, ph, sg, b, br, n, u, k, l ) 100


Medi-Test MED137 Combi-10SGL Test (g, p, ph, sg, b, br, n, u, k, l ) 100 		Medi-Test MED137 Combi-10SGL Test (g, p, ph, sg, b, br, n, u, k, l ) 100

Medi-Test MED137 Combi-10SGL 100 Strips Test strips for rapid determination of blood, urobilinogen, bilirubin,
protein, nitrite, ketones, glucose, pH-value, density and leucocytes in urine. Instructions for use:
The urine sample should be collected in a clean container. Dip the reagent strip for approximately
1 second into the fresh urine. Withdraw strip from sample by drawing the
edge of the strip across the rim of the container to remove excess urine. Holding the tube
of strips (closed) horizontally, align the arrows on the strip in the same direction as
those on the colour label. After 30 to 60 seconds compare the test strip with the colour
scale. Colour changes that take place after more than 2 minutes are of no significance.
The urine should not be more than 4 hours old when tested. Principle
Blood: The detection is based on the pseudoperoxidative activity of hemoglobin and
myoglobin, which catalyze the oxidation of an indicator by an organic hydroperoxide
producing a green colour.
Urobilinogen: The test paper contains a stable diazonium salt producing a reddish
azo compound with urobilinogen.
Bilirubin: A red azo compound is obtained in the presence of acid by coupling of
bilirubin with a diazonium salt.
Protein: The test is based on the „protein error“ principle of indicators. The test zone is
buffered to a constant pH value and changes colour from yellow to greenish blue in the
presence of albumin. Other proteins are detected with less sensitivity.
Nitrite: Microorganisms, which are able to reduce nitrate to nitrite, are indicated
indirectly with this test. The principle of Griess reagent is the basis of this test. The test
paper contains an amine and a coupling component. A red coloured azo compound is
obtained by diazotisation and subsequent coupling.
Ketones: The test is based on the principle of Legal’s test. Acetoacetic acid and
acetone form a violet coloured complex with sodium nitroprusside in an alkaline medium.
Glucose: The detection is based on the glucoseoxidase-peroxidase-chromogen
reaction. Apart from glucose, no other compound in urine is known to give a positive reaction.
pH: The test paper contains indicators which clearly change colour between pH 5 and
pH 9 (from orange to green to turquoise).
Specific gravity: The test determines the concentration of ions in urine and shows a
good correlation to the refractometrical method. The colour of the test strip changes
from deep blue in urine with low ionic concentration through green to yellow in urines
with high ionic concentrations.
Leucocytes: The test is based on the esterase activity of granulocytes. This enzyme
splits carboxylate. The alcohol constituent released reacts with a diazo salt producing a
violet colour.


Code: MED137













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Online Catalogue |  Diagnostics |  Urinalysis Reagent Strips |  Medi-Test MED137 Combi-10SGL Test (g, p, ph, sg, b, br, n, u, k, l ) 100