C16282500

Product Name：Polyhexamethylenebiguanide hydrochloride

Formula：(C₈H₁₇N₅)n·CIH

Mol. Weight：219.72

CAS No.：32289-58-0

Storage Temperature：20℃±4℃

Purity：98.0% (g/g)

Expanded Uncertainty U：3.0% (g/g)

Uncertainty

The certified value(s) and uncertainty(ies) are determined in accordance with EURACHEM/CITAC Guide for "Quantifying Uncertainty in Analytical Measurement, 3rd edition", with an 95% confidence level (k=2). Uncertainty is based on the Total Combined Uncertainty, including uncertainties of characterisation and stability testing. Stability values are based on real evidence opposed to simulation.

The producer certifies that this reference material meets the specification stated in this certificate until the expiry date,provided it is stored unopened at the recommended temperature herein. Product warranties for this reference material are set out in the terms and conditions of purchase.

Method of Characterisation

Purity = 100% - Assay impurities - Water content (KF)

Method of ldentification

RT,MS

Batch Information

Water Content： 2% (g/g) by Karl- Fischer-Titration (U(exp) = 0.2% (g/g)).

Mixture of Congeners. Ratio unknown.

Substance is hygroscopic.

Intended Use

This RM is intended for use in a laboratory as a calibration and quality control standard or in method development for analytical techniques.

Safety

Proper precautions should be observed while handling. See Safety Data Sheet.

Traceability

The balances used for gravimetric measurements are calibrated with weights traceable to the national standards (DKD). The calibration ofthe balances is verified daily internally and annually by an external accredited calibration service. Chromatographic methods are traceable to the International System of Units (SI).

Storage

The RM should be stored in the original sealed container at the indicated temperature.

Instructions for use

It is recommended to use 1 mg as theminimum sample size and if lessmaterial is used, to increase thecertified uncertainty by a factor of twofor half sample and four for a quarterof sample. If storage after opening is
necessary, the RM should be tightlyclosed and kept from light andmoisture. If the RM was in a sealedampoule, it should be transferred to avial with minimum head space. Visit the support section of our ebsitelgcstandards.com for a series ofDr. Ehrenstorfer Tech Tip videos and Ehrenstorferfrequently asked questions.

注：以上信息僅供參考，以產(chǎn)品附帶證書為準。