1.0 ACCREDITATION/REGISTRATION 

INORGANIC VENTURES is accredited to SO17034"General Requirements for the Competence of Reference Material Producers"andISO/IEC17025"Genera Requirements for the Competence ofTesting and Calibration Laboratories".
Inorganic Ventures is also an ISO9001reqistered manufacturer(QSR Certificate Number QSR-1034).

2.0 PRODUCT DESCRIPTION 

Product Code: Single Analyte Custom Grade Solution 
Catalog Number: CGAS(3)1 
Lot Number: R2-AS697438 
Matrix: 0.3%w/vNaOH 
0.06%w/vNaHCO3
0.5%(v/v)HCI
Value/Analyte(s): 1000ug/mL ea: 
Arsenic+3
Starting Material: As203 
Starting Material Lot#: 2266 
Starting Material Purity 99.9811%

3.0 CERTIFIED VALUES ANDUNCERTAINTIES 

Certified Value: 1001±5μg/mL 
Density: 1.002g/mL(measuredat20±4℃) 
AssayInformation:
Assay Method #1 1001±4μg/mL 
lodometric NIST SRM 83d Lot Number:83d

-The Calculated Value is a value calculated from the weight of a startingmaterial that has been certified directlyvs.a National Institute of Standards andTechnology(NIST)SRMRMSee Sec 4.2 for balance traceability.
The follow ing equations are used in the calculation of the certified value and the uncertainty.Reported uncertainties represent expanded uncertainties expressed at approximately the 95% confidence level using a coverage factor of k= 2

-Store between approximately4°-30°C while in sealed TCT bag
-While stored in the sealed TCTbag,transpiration ofthis CRMRMis negligible.After opening the sealed TCT bag transpiration of the CRMRM will occurresulting in a gradual increase in the analyte concentration(s).It is the responsibility of the user to account for this effect.When the bottle is weighed both before and after being placed in storage,the mass difference observed will be a measure of transpiraion mass loss

-After opening the sealed TCTbag,keep cap tightly sealed when not in use and store between 4°-24°C to minimize the effects of transpiration.Use at 20°± 4°C to minimize volumetric dilution error when using the reported density. Do not pipette from the container.Do not return removed aliquots to container.

-For moreinformationvisit wwwinorganicventures.com/TCT
Atomic Weight:ValenceCoordination Number;Chemical Form in Solution-74.92+36HAsO2
Chemical Compatibilitv-Arsenic has no cationic chemistryI is soluble in HCLHNO3.H3PO4.H2SO4 anc HF aaueous matrices water and NH4OHIt is stable with most inorganic anions(forms arsenate when boiled with chromate)but many cationic metals form the insoluble arsenates under pH neutral conditions When fluorinated and/or under acidic conditions arsenate formation is typically not a problem at moderate to low concentrations
Stability-2-100 ppb levels stable for months alone or mixed with other elements at equivalent levels in 1% HNO3/LDPE container.
As3 Containing Samples(Preparation and Solution)-Metal(soluble in 1:1H2/HNO3);Oxides(the oxide exists in crvstalline and amorphous forms where the amorphic form is more water soluble.The oxides
typically dissolve in dilute acidic solutions when boiled);Minerals(one gram of powered sample is fused in a Ni crucible with 10 grams ofa 1:1 mix of K2CO3 and KNO3 and the meltextracted with hot water); Organic Matrices (0.2 to 0.5 grams of sample are fused with 15 grams of a 1:1 Na2CO3/Na22 mixin a Ni crucible. The fuseate is extracted with water and acidified with HNO3)
Atomic Spectroscopic Information(ICP-OES D.L.s are given asradial/axial view):
Technique/Line         Estimated D.L.     Order               Interferences(underlined indicates severe) 
ICP-MS75 amu             20 ppt                N/A         40Ar35CI, 59Co16,36Ar38Ar1H8Ar37C,l,Ar39K,150Nd2+150Sm2+
ICP-OES189.042 nm  0.05/0.005μg/mL   1                               Cr 
ICP-OES193.696nm   0.1/0.01μg/mL       1                               V, Ge 
ICP-OES228.812nm   0.1/0.01μg/mL       1                             Cd,Pt,Ir,Co

8.0 HAZARDOUS INFORMATION

-Please refer to the Safety Data Sheet for information regarding this CRMRM.

9.0 HOMOGENEITY

-This solution was mixed according to an in-house procedure and is guaranteed to be homogeneous Homogeneity data indicate that the end user should take a minimum sample size of 0.2 mL to assure homogeneity.

10.0 QUALITY STANDARD DOCUMENTATION

10.1 ISO 9001 Quality Management System Registration
-QSRCertificate Number QSR-1034
10.2 ISO/IEC 17025"General Reauirements for the Competence of Testing and Calibration Laboratories'
-Chemical Testing-Accredited/A2LA Certificate Number883.01

10.3ISO17034"General Requirements for the Competence of Reference Material Producers"
-Reference Material Producer-Accredited/A2LACertificate Number 883.02
Inorganic Ventures,300 Technology Drive,Christiansburg.Va24073,USA:Telephone:800.669.6799;540.585.3030,Fax540.585.3012;inorganicventures.com info@inorganicventures.com

11.0 CERTIFICATION,LOT EXPIRATION AND PERIOD OF VALIDITY 

11.1 Certification issue Date
December 21,2020
-The certification is valid within the measurementuncertaintyspecified provided the CRMRM is stored and handled in accordance with instructions given in Sec 7.1.This certification is nullified if instructions in Sec 7.1 are not followed or if the CRMRMis damagedcontaminatedor otherwise modified.
11.2 Lot Expiration Date
-December 212024
-The date after which this CRMRM should not be used
-The lot expiration date reflects the period of time that the stability of a CRMRM can be supported by long term stabilitystudies conducted on properlystored and handled CRMRMsLot expiration is limited primarily by transpiration(loss ofwater from the solution)andinfrequentlybychemical stability11.3 Period of Validity
-SealedTCT Bag Open Date
-This CRMRM should not be used longer than one year(or sixmonths in the case of a 30mL bottle) from the date of opening the aluminized bag or after the date given in Sec.11.2whichever comes first.This is
continaentupon the CRMRM beina stored and handled in accordance with the instructions aiven in Sec. 7.1

注：证书信息仅供参考，以产品附带证书为准。