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Hellma® liquid calibration standards set

Hellma® 液体校准标准品组合

货号
Z802654
规格纯度
UV60, UV600, UV14, for testing the photometric accuracy
参考价格
27067.3 *本价格含增值税费
促销
服务
  • 原厂保证
  • 包邮
  • 增值税票
数量
-+
产品名称:
Hellma® liquid calibration standards set
Hellma® 液体校准标准品组合
产品介绍:

产品说明

一般描述

Certified liquid Hellma® calibration standard to enable the checking of spectrophotometers with respect to photometric accuracy.
Consisting of :
60 mg Potassium dichromate in perchloric acid (667-UV60, wavelength 235; 257; 313; 350 nm)
600 mg Potassium dichromate in perchloric acid (667-UV600, wavelength 430 nm)
Perchloric acid reference filter (667-UV14, wavelength 235; 257; 313; 350 nm)
Potassium dichromate dissolved in perchloric acid is a highly suitable method to check for photometric accuracy (absorbance) in the UV region. Potassium dichromate gives a spectral scan containing characteristic peak maxima at 257 nm and 350 nm and minima at 235 nm and 313 nm. The potassium dichromate solution is sealed in an airtight sealed quartz precision cell with 10 mm light path. The absorbance values of the filter are determined at the wavelengths 235 nm, 257 nm, 313 nm, and 350 nm and are specified in the certificate. It should be noted that the measurements are carried out with the filter 667-UV14 (0.01 N perchloric acid) in the reference beam path. Measured values of the reference filter are separately displayed in the certificate.

法律信息

Hellma is a registered trademark of Hellma GmbH

基本信息

NACRESSB.32

产品性质

质量水平100
等级certified reference material
manufacturer/tradenameHellma 667-UV305
application(s)food and beverages
petroleum
pharmaceutical
plastics
格式neat

安全信息

储存分类代码10 - Combustible liquids
WGKWGK 3
闪点(F)Not applicable
闪点(C)Not applicable

Sigma-Aldrich

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