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Merck

1.14689

CombiCheck 70 standard solution

photometric, Spectroquant®

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About This Item

UNSPSC Code:
41116116
NACRES:
SE.11

Key Documents

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Product Name

CombiCheck 70, photometric, Spectroquant®

product line

Spectroquant®

analyte functional class(es)

chemical oxygen demand (COD)

specific analyte(s)

ammonium, nitrogen

technique(s)

photometry: suitable

application(s)

agriculture
biotechnology/fermenter
disposal drainage water
drinking water
food testing
ground and surface water
seawater
wastewater

detection method

photometric (ammonium, COD and nitrogen)

format

multi-component solution

storage temp.

15-25°C

Quality Level

100

Related Categories

Analysis Note

Standard Solution Reagent R-1:

Ammonium: 50.0 ± 5.0 mg/L NH4-N
COD: 5000 ± 400 mg/L COD
Nitrogen: 50 ± 7 mg/L N

Addition Solution Reagent R-2 (Spike sample):

Ammonium: 20.0 ± 2.0 mg/L NH4-N
COD: 2000 ± 200 mg/L COD
Nitrogen: 20 ± 6 mg/L N

Application

CombiCheck 70 can be used to check the photometric measurement system (reagents, measurement device, handling) and the mode of working.

Features and Benefits

  • Manufactured and tested in DIN EN ISO 9001:2008 accredited laboratory
  • The solution is pre-diluted to a concentration that falls into the range of our Spectroquant® test kits. This eliminates the need for dilution prior to analysis and hence avoids a common source of error
  • Ready-to-use diluted reference materials (RMs) along with expanded measurement uncertainty ensure absolute precision
  • Accompanied with a certificate of analysis (COA) detailing the certified values, including uncertainty and expiry date
  • Directly traceable to standard reference materials (SRM) from the National Institute of Standards and Technology (NIST) or to United States Pharmacopeia (USP)
  • Reliable and reproducible results

General description

This Spectroquant® CombiCheck 70 is a high-quality laboratory solution used for internal quality control and method-controlling purposes.

These Spectroquant® standard solutions perfectly complement our ready-to-use test kits and photometers within the Spectroquant® portfolio and are ideal for validating international norm methods described in e.g., ISO, EN, APHA, and EPA.

Please visit the Reference Material Quality Grade website to find a comprehensive overview of our different grades of standards.

Legal Information

SPECTROQUANT is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class

12 - Non Combustible Liquids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Global Trade Item Number

SKUGTIN
1.14689.000104022536636306

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