ASTM-P-0091-01-10X

Description： Hydrogen Sulfide

Solvent： Toluene

Hazards： Refer to SDSfor complete safety information

Sample size： 1 mL

Components： 1

Storage Condition： Refrig (0-5 ℃)

A product with a suffix(-1A -2B,elc. or -01,-02, etc.) on its ot number has ha is expirton date extended and is denticalto the same lot number without the suffix.

²All weights are traceable through NIST,Test No.684/289871-1

¹Certified Analyte Concentration = Purity x Prepared Concentration.

The Uncertainty associated with the certied concentration repored on this ceftificate is±2.4%. This valueis the combined expanded uncertainty and represents an esimated standard deviadion equalto the positve square root of the total varation of the uncetainty of componens.A nomalditiribution is assumed and a cveragefactor of K=2 is chosen using approxirnately a 95% confidence level.
Labels and cerfficatesfllow U.S.Conventions in reporing numercal values. A comma(.) , is used to seperale unis of one-thousand of grealer. A peirod( .)is used as a decimal place marker.

1. Quality Standards

ISO 17034：2016- General Requirements for the Competence of ReferenceMaterial Producers ANAB Certificate Number AR-1463
ISO/IEC 17025：2017 - General Requirements for the Competence of TestingAnd Calibration Laboratories ANAB Certificate Number AT-1339

ISo 9001：2015 - Quality Management System - RequirementsEagle Registrations Certificate Number 3774

2.Intended Use

The product covered by this certificate is designed for calibration or for use in quality control procedures for the specified chemical compounds listed on the reverse side. This product can be used for quantification and/oridentification. This product can also be used as a reference material to validate analytical procedures, subject to theconditions under Section 7.

3. Manufacturing

All balances are calibrated daily using an in-house procedure with weights that are compared annually to master weights and traceable to NIST. The balances are also calibrated annually by an ISO/IEC 17025 accredited calibration laboratory.

Please refer to the NIST test number listed on the front of this certificate. Class A glassware is used in the manufacture and quality control of all standards and calibrated using an in-house procedure. Good Laboratory Practices have been used throughout the preparation of this Standard.

4. Homogeneity

This product is sufficiently homogeneous and any sample size would be within the uncertainty budget.

5. Stability

The manufacturer guarantees the stability of this solution through the expiration date stated on the label, when handled and stored according to the conditions stated on the label

6. Uncertainty

The uncertainty values as stated on the face of this certificate have been determined using the EURACHEM/CITAC Guide.We report a combined expanded uncertainty equal to the positive square root of the totalvariance of the uncertainty ofthe components using the following formula ：U_a=√(u(V))²+(u(m))²+(u(RO))²,Thisformula represents uncertainty componentsfrom the mass, volume,short-term stability, long-term stability andhomogeneity factors associated withthe production of this product.The expanded uncertainty, assumes a normaldistribution and a coverage factor of k=2 is chosen using approximately a 95% confidence level.

7. Legal Notice and Limit of Liability

This product is for routine laboratory analysis and research purposes only.The company's liability will be limited to replacement of product or refund of purchase price.Notice of claims must be madewithin thirty (30) days from date of delivery.

注：证书信息仅供参考，以产品附带证书为准。