Benzidine

Solvent: Methanol

Hazards: Irritant, Flammable, Carcinogen

CAS: 92-87-5

Analyte Purity: 99.8%

Gravimetric Concentration (μg/L): 50.0±0.47

Acceptance Limits (μg/L): 30.0-70.0

This certified reference material (CRM) was manufactured and certified by NSI Lab Solutions according to quality procedures meeting our accreditation requirements of ISO 17034:2016 and ISO/IEC 17025:2017.

Packaging, Storage, Instructions For Use

This CRM is packaged in a flame-sealed ampule and must be stored at 2°C to 8°C. To use this CRM, allow it to reach room temperature. Open the ampule and withdraw an aliquot appropriate for your application. Mix it gently by inversion. Inspect for precipitate. If present, sonicate for a few minutes to redissolve.

Fill a 1000 mL Class A flask with about 900 mL organic free reagent water. Pipet exactly 1.0 mL of the ampule concentrate into the flask. Bring the flask to volume with reagent water and mix well. This represents the sample for analysis by your normal method. Report in units of ug/L.

Certified concentration is based upon the gravimetric true value when prepared according to instructions.

Acceptance limits are based upon USEPA Drinking Water and Non-Potable Water Interlaboratory Studies.

Traceability Information

Analyte Source Materials: The highest purity analyte source materials are used in the manufacture of this standard. The actual purity is referenced above.

Method: This standard was verified Volumetrically

Balance: All analytical balances are calibrated on a semiannual basis by an ISO 17025 accredited calibration laboratory and are traceable to NIST. Traceable Calibration Certificate available upon request.

All balances are checked daily by an in-house standard operating procedure. The weights used for this daily verification are calibrated annually by an ISO 17025 accredited calibration laboratory and are certified traceable to NIST. Certificate of Calibration and Traceability available upon request.
Thermometer: All thermometers are NIST traceable through thermometers that are calibrated annually by an ISO 17025 accredited calibration laboratory.

Glassware: All glassware used in the manufacture of our standards is Class A. An in-house standard operating procedure is used to verify all glassware prior to it being placed into service. Volumetric pipetors are calibrated every four months by an ISO 17025 accredited calibration laboratory.

Intended Uses

Calibration of analytical instruments

Validation of analytical methods

Preparation of working level reference materials, i.e. "check standards"

Detection limit studies

Homogeneity

This standard was thoroughly mixed in production and is guaranteed homogenous.

聯(lián)苯胺質(zhì)控樣

分析項(xiàng)目: 聯(lián)苯胺

CAS：92-87-5

純度： 99.8%

確認(rèn)值（μg/L）：50.0±0.47

接受區(qū)間（μg/L）：30.0-70.0

保質(zhì)期：2024-06-30

溶劑：甲醇

危害：易燃，刺激，致癌

包裝、儲(chǔ)存及使用說(shuō)明：

該樣品以2mL安瓿瓶密封包裝，需2-8°C保存。

使用時(shí)要回溫至室溫

上下翻轉(zhuǎn)混勻，檢查是否有沉淀，如有，可用超聲溶解。按需取適量使用。

1. 回溫至室溫

2. 1000mL Class A容量瓶中加入900mL試劑水（不含有機(jī)物）至刻度。

3. 打開(kāi)安瓿瓶，準(zhǔn)確移取1.0mL濃縮液至容量瓶中。

4. 定容并混勻。

5. 所得即為要分析的樣品。

確認(rèn)值根據(jù)質(zhì)量濃度設(shè)置。接受區(qū)間根據(jù)USEPA飲用水、非飲用水能力驗(yàn)證標(biāo)準(zhǔn)設(shè)置。

實(shí)驗(yàn)室溯源

原料：分析項(xiàng)目原料選用可用的最高純度原料用于配制該樣品。實(shí)際濃度如上列出。

方法：該樣品以質(zhì)量法驗(yàn)證

天平：所有天平按ISO17025校準(zhǔn)實(shí)驗(yàn)室認(rèn)證要求每季度校準(zhǔn)一次，溯源至NIST。所有天平每天按照內(nèi)部標(biāo)準(zhǔn)操作程序查驗(yàn)， 查驗(yàn)所用砝碼按17025認(rèn)證要求每年校準(zhǔn)一次。

溫度計(jì)：所有溫度計(jì)按17025認(rèn)證要求每年校準(zhǔn)一次，溯源至NIST。

玻璃器皿：此樣品配制過(guò)程中涉及的所有玻璃器皿為A級(jí).所有玻璃器皿啟用前經(jīng)過(guò)內(nèi)部標(biāo)準(zhǔn)操作程序校驗(yàn)。移液器按17025 認(rèn)證要求每月校準(zhǔn)一次。

用途

分析方法驗(yàn)證

檢測(cè)極限研究

分析員能力驗(yàn)證

均勻性

此樣品生產(chǎn)過(guò)程中已充分混勻，確保其均勻性。

注：以上信息僅供參考，以產(chǎn)品附帶證書(shū)為準(zhǔn)。