1.0 ACCREDITATION / REGISTRATION

INORGANIC VENTURES is accredited to ISO 17034, "General Requirements for the Competence of Reference Material Producers" and ISO/IEC 17025, "General Requirements for the Competence of Testing and Calibration Laboratories''.

Inorganic Ventures is also an ISO 9001 registered manufacturer (QSR Certificate Number QSR-1034).

ICP Assay NIST SRM 3103a Lot Number: 100818

Assay Method#2 Arsenic+3 6 ± 1 μg/mL

Iodometric Assay NIST SRM 83d Lot Number: N/A

*Starting Material lot contains measurable amount of Arsenic+3

-The Calculated Value is a value calculated from the weight of a starting material that has been certified directly vs. a National Institute of Standards and Technology (NIST) SRM/RM. See Sec 4.2 for balance traceability.

The following 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.

Characterization of CRM/RM by Two or More Methods

Certified Value, X_CRM/RM, where two or more methods of characterization are used is the weighted mean of the results:

X_CRM/RM = ∑(w_i)(x_i)

x_i = mean of Assay Method i with standard uncertainty u_char

w_i= the weighting factors for each method calculated using the inverse square of the variance

CRM/RM Expanded Uncertainty (±) = X_CRM/RM = k (u²_char + u²_bb + u²_lts + u²_ts)^1/2

k = converage factor = 2

u_char = [∑(w_i)²(u_char)²]^1/2, where u_char are the errors from each characterization method

u_bb = bottle to bottle homogeneity standard uncertainty

u_lts = long term stability standard uncertainty (storage)

u_ts = transport stability standard uncertainty

4.0 TRACEABILITY TO NIST

-This product is traceable to NIST via an unbroken chain of comparisons. The uncertainties for each certified value are reported, taking into account the SRM/RM uncertainty error and the measurement, weighing and volume dilution errors. In rare cases where no NIST SRM/RM are available, the term 'in-house std.' is specified.

4.1 Thermometer Calibration

-All thermometers are NIST traceable through thermometers that are calibrated by an accredited calibration laboratory.

4.1 Balance Calibration

-All analytical balances are calibrated by an accredited calibration laboratory and procedure. The weights used for testing are annually compared to master weights and are traceable to NIST.

4.3 Glassware Calibration

-An in-house procedure is used to calibrate all Class A glassware used in the manufacturing and quality control of CRM/RMs.

5.0 TRACE METALLIC IMPURITIES (TMI) DETERMINED BY ICP-MS AND ICP-OES (μg/mL)

CRM/RMs are tested for trace metallic impurities by Axial ICP-OES and ICP-MS. The result from the most sensitive method for each element, is reported below. Solutions tested by ICP-MS were analyzed in an ULPA-Filtered Clean Room. An ULPA-Filter is 99.9985% efficient for the removal of particles down to 0.3 pm.

M- Checked by ICP

O - Checked by ICP-OES

i - Spectral Interference

n - Not checked for

s - Solution Standard Element

6.0 INTENDED USE

-For the calibration of analytical instruments and validation of analytical methods as appropriate.

7.0 INSTRUCTIONS FOR THE CORRECT USE OF THIS REFERENCE MATERIAL

7.1 Storage and Handling Recommendations

注：以上信息仅供参考，以产品附带证书为准。