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Merck

1.14695

CombiCheck 50 standard solution

photometric, Spectroquant®

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About This Item

UNSPSC Code:
41116116
NACRES:
SE.11
Technical Service
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Product Name

CombiCheck 50, photometric, Spectroquant®

product line

Spectroquant®

Quality Level

analyte functional class(es)

chemical oxygen demand (COD)

specific analyte(s)

ammonium, nitrogen

technique(s)

photometry: suitable

application(s)

agriculture
aquaculture
boiler and cooling water
construction materials
disposal drainage water
drinking water
electroplating
environmental
food testing
ground and surface water
milk and dairy products
mineral water
oil and petrochemicals
power plants
seawater
swimming pools
wastewater

detection method

photometric (ammonium, COD and nitrogen)

format

multi-component solution

storage temp.

15-25°C

General description

This Spectroquant® CombiCheck 50 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.

Application

CombiCheck 50 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

Analysis Note

Standard Solution Reagent R-1:

Ammonium: 1.00 ± 0.10 mg/L NH4-N
COD: 20/0 ± 4 mg/L COD
Nitrogen: 5.0 ± 0.7 mg/L N

Addition Solution Reagent R-2 (Spike sample):

Ammonium: 1.00 ± 0.10 mg/L NH4-N
COD: 10.0 ± 3.0 mg/L COD
Nitrogen: 3.0 ± 0.5 mg/L N

Legal Information

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


Storage Class

12 - Non Combustible Liquids

wgk

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable


Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Please refer to KIT Component information

pdsc

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prtr

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fsl

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ishl_indicated

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ishl_notified

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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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Articles

Optimize measurement reliability with advanced analytical quality assurance and process control using Spectroquant®, MQuant®, TraceCERT®, and more.





Global Trade Item Number

SKUGTIN
1.14695.000104022536637167