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Online Catalogue |  Diagnostics |  Urinalysis Reagent Strips |  Medi-Test MED138 Combi-8 (b, p, n, k, g, ph, sg, l)


Medi-Test MED138 Combi-8 (b, p, n, k, g, ph, sg, l) 		Medi-Test MED138 Combi-8 (b, p, n, k, g, ph, sg, l)

Medi-Test MED138 Combi-8 100 Strips Test strips for rapid determination of blood, protein, nitrite, ketones, glucose, pH-value, specific gravity and leucocytes in urine.
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.
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: MED138













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Online Catalogue |  Diagnostics |  Urinalysis Reagent Strips |  Medi-Test MED138 Combi-8 (b, p, n, k, g, ph, sg, l)