1.14689
CombiCheck 70 Test, photometric
photometric, Spectroquant®
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About This Item
UNSPSC Code:
41116116
NACRES:
SE.11
product name
CombiCheck 70, photometric, Spectroquant®
product line
Spectroquant®
Quality Level
analyte functional class(es)
chemical oxygen demand (COD)
specific analyte(s)
ammonium, nitrogen
technique(s)
photometry: suitable
detection method
photometric (ammonium, COD and nitrogen)
format
multi-component solution
storage temp.
15-25°C
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.
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 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
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
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
Legal Information
SPECTROQUANT is a registered trademark of Merck KGaA, Darmstadt, Germany
Storage Class Code
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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