Recommended Products
product line
Spectroquant®
Quality Level
analyte functional class(es)
chemical oxygen demand (COD)
specific analyte(s)
ammonium, chloride, nitrate, phosphate, sulfate
technique(s)
photometry: suitable
detection method
photometric (ammonium, chloride, COD, nitrate, phosphorus and sulfate)
format
multi-component solution
storage temp.
15-25°C
General description
This Spectroquant® CombiCheck 10 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 10 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: 4.00 ± 0.30 mg/L NH4-N
Chloride: 25 ± 6 mg/L Cl
COD: 80 ± 12 mg/L COD
Nitrate: 2.50 ± 0.40 mg/L NO3-N
Phosphorous: 0.80 ± 0.08 mg/L PO4-P
Sulfate: 100 ± 15 mg/L SO4
Addition Solution Reagent R-2 (Spike sample):
Ammonium: 3.00 ± 0.25 mg/L NH4-N
Chloride: 25 ± 6 mg/L Cl
COD: 30 ± 8 mg/L COD
Nitrate: 3.00 ± 0.50 mg/L NO3-N
Phosphorous: 0.60 ± 0.07 mg/L PO4-P
Sulfate: 40 ± 5 mg/L SO4
Ammonium: 4.00 ± 0.30 mg/L NH4-N
Chloride: 25 ± 6 mg/L Cl
COD: 80 ± 12 mg/L COD
Nitrate: 2.50 ± 0.40 mg/L NO3-N
Phosphorous: 0.80 ± 0.08 mg/L PO4-P
Sulfate: 100 ± 15 mg/L SO4
Addition Solution Reagent R-2 (Spike sample):
Ammonium: 3.00 ± 0.25 mg/L NH4-N
Chloride: 25 ± 6 mg/L Cl
COD: 30 ± 8 mg/L COD
Nitrate: 3.00 ± 0.50 mg/L NO3-N
Phosphorous: 0.60 ± 0.07 mg/L PO4-P
Sulfate: 40 ± 5 mg/L SO4
Legal Information
SPECTROQUANT is a registered trademark of Merck KGaA, Darmstadt, Germany
Storage Class
12 - Non Combustible Liquids
wgk_germany
nwg
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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