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Blank Strips

for use with REFLECTOQUANT®



analyte chemical class(es)


specific analyte(s)

ammonium, ascorbic acid, calcium, chlorine, formaldehyde, hydrogen peroxide, hydroxymethylfurfural (Hmf), iron, lactic acid, magnesium, magnesium, malic acid, nitrate, nitrite, peracetic acid, phosphate, potassium, sulfite


RQflex® 10 Plus
RQflex® 10
RQflex® 20
for use with REFLECTOQUANT®

detection method


storage temp.


General description

The Reflectoquant® Blank test strips incorporate paperzones not impregnated with reagent. They are used to perform tests to see whether the color of a sample (e.g. red juice) stays on the paper of the blank zones. A difference in color can indicate that the intrinsic color of the sample may affect results obtained with other Reflectoquant® test strips. For decolorization we then suggest to pre-treat the sample with Polyvinylpolypyrrolidone (Divergan®, 1.07302). Various application notes for these special samples are available.

Analysis Note

Application test: conforms

Legal Information

Divergan is a registered trademark of BASF SE
REFLECTOQUANT is a registered trademark of Merck KGaA, Darmstadt, Germany
RQFLEX is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

11 - Combustible Solids



Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Quality

Enter Lot Number to search for Certificate of Quality (COQ).


Application Notes: Reflectometry – Hydroxymethylfurfural (HMF) in honey

Hydroxymethylfurfural (HMF) in honey – reflectometric determination after after conversion with a barbituric acid derivative and an aminophenazone derivative

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