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Project Introduction English

National reference material resource sharing platform

Sponsor: China Academy of Metrology, State Administration of Market Supervision
Sales hotline: 010-64524710
sample
GBW(E)085836 Ammonia nitrogen solution reference material
250mL/bottle refrigerated storage
4 * 250mL/bottle GBW (E

￥250.00

state On sale
logistics General transportation
Current batch quantity value 4.00mg/L, uncertainty: 2% (k=2)
term of validity 2025-03-08

￥1000.00

state On sale
logistics General transportation
Current batch quantity value No. Name Standard Value (mg/L) Relative expanded uncertainty (k=2) Base GBW (E) 085833 Ammonia nitrogen solution reference material 0.50 2% H2O GBW (E) 085834 Ammonia nitrogen solution reference material 1.00 2% H2O GBW (E) 085835 Ammonia nitrogen solution reference material 2.00 2% H2O GBW (E) 085836 Ammonia nitrogen solution reference material 4.00 2% H2O
term of validity 2025-03-08
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English name Ammonia nitrogen solution
Reference material certificate
Sample for reference		 https://www.ncrm.org.cn/Repository/ff303cd1-f6bf-4a52-a268-f88550e19c68.pdf
Reference material certificate English
Sample for reference
application area Agriculture and environment/simulated natural water, agriculture and environment/surface water groundwater ocean, instrument verification/calibration reference materials/instrument verification/calibration reference materials, inorganic solution reference materials/non-metallic elements and others
Saving conditions It is recommended that the transportation time limit should not exceed 7 days for normal temperature transportation. It needs to be refrigerated at 4 ° C, and contamination shall be strictly prevented during use.
Precautions After the reference material is opened for the first time, it is sealed with sealing film and stored at 4 ° C for cold storage. It can be stable for 4 months without contamination.
Characteristic morphology liquid state
matrix
Main analysis methods Ion Chromatography # Spectrophotometry
Constant value unit China Academy of Metrology
Specifications 250mL/bottle
Rating certificate value information
Standard value Relative expanded uncertainty (%, k=2) Company CAS remarks
Ammonia nitrogen four two Mass fraction (mg/L)
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Order Phone
010-64524710
mailbox
crm-service@nim.ac.cn
Cooperative telephone
010-64525639/64524804
Complaints and feedback
010-64525639/64524793
After sales service and consultation
010-64524718/64524764/64524719
address
Object Service Hall, Floor 2, Floor 1A, West Gate, No. 18, North 3rd Ring East Road, Chaoyang District, Beijing
Reference Material Research and Management Center of China Academy of Metrology (Office of National Reference Material Research Center) Filing No.: Jing ICP Bei No. 10016728-3 Jingongwang Filing No. 11010502037132
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