Certification of a low value electrolytic conductivity solution using traceable measurements

Fraga, Isabel Cristina Serta; Lopes, J C; Sobral, Sidney Pereira; Ribeiro, Carla M.

doi:10.1007/s00769-013-0964-0

Cited by 6 publications

(7 citation statements)

References 11 publications

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“…Before calculating the EC value (κ) of RM for KCl 1 M, the cell constant ( ) of Jones cell type D must firstly be determined. This is in accordance with equation ( 1) [12].…”

Section: Procedures Of Ec Measurementsupporting

confidence: 91%

“…The F-test using a one-way analysis of variance (ANOVA) was then used to check the homogeneity of the RM for KCl 1 M solution. The RM is categorized as a homogenous solution if the value of < [12].…”

Section: Homogeneity Testmentioning

confidence: 99%

“…The stability of the RM for the KCl 1 M solution was evaluated using linear regression analysis. The RM is categorized as stable if P-value for X Variable 1 more than 0.05 [12,20,21]. In a similar procedure, the stability of RM for KCl 1 M solution in a glass bottle was also measured and the result is reported.…”

Section: Effect Of Packaging Types and Temperature Condition On The Short-term Stabilitymentioning

confidence: 99%

“…The results are listed in Table 3. From the statistical calculation, it can be observed that the value of F (3.019815) is less than of (4.413873), indicating that the RM of KCl 1 M in the glass bottles are homogenous [12]. Furthermore, the homogeneity testing of RM for KCl 1 M in the HDPE bottle was also conducted using the same procedure with glass bottles as mentioned above.…”

Section: Homogeneity Testmentioning

confidence: 99%

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The Effect of Packaging Type and Storage Temperature on the Short Term Stability of Electrolytic Conductivity Reference Materials

Hindayani¹,

Zuas²,

Hamim³

2021

JESR

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In this work, monitoring the effect of packaging type and storage temperature on the short term stability of calibration standard solution KCl 1 M were conducted. The KCl 1M were packaged in two types of packaging i.e., high-density polyethylene (HDPE) and glass bottle. The effects of packaging type and storage temperature were monitored for four weeks at 25 °C and 40 °C. The conductivity values of KCl 1 M in the HDPE and glass bottle were 111.61 mS/cm and 111.62 mS/cm, respectively. The results indicated that the KCl 1M solution at 25 °C in both HDPE and glass bottle were found to be good in short term stability and there was no significant different between the two packaging types. At temperature of 40 °C, however, short term stability of the KCl 1 M in a glass bottle was better than the HDPE bottle.

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“…Before calculating the EC value (κ) of RM for KCl 1 M, the cell constant ( ) of Jones cell type D must firstly be determined. This is in accordance with equation ( 1) [12].…”

Section: Procedures Of Ec Measurementsupporting

confidence: 91%

Section: Homogeneity Testmentioning

confidence: 99%

Section: Effect Of Packaging Types and Temperature Condition On The Short-term Stabilitymentioning

confidence: 99%

Section: Homogeneity Testmentioning

confidence: 99%

See 2 more Smart Citations

The Effect of Packaging Type and Storage Temperature on the Short Term Stability of Electrolytic Conductivity Reference Materials

Hindayani¹,

Zuas²,

Hamim³

2021

JESR

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show abstract

“…Certified reference material is a material characterized by the metrologically valid procedure for one or more specified properties, accompanied by a certificate that provides the value of the specified property, and its associated uncertainty [1,2]. The value and uncertainty of CRM property can be traceable to the SI units, and it can be available for international communication.…”

Section: Introductionmentioning

confidence: 99%

Development of a new certified reference material of high-purity chrysin for the quality control of traditional Chinese medicine

Yang

Gong

et al. 2016

Accred Qual Assur

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Chrysin, a naturally occurring flavone, extracted from traditional Chinese herbs and abundantly found in propolis has been known to exhibit a wide range of biological activities, such as antioxidant, anti-inflammatory, hypolipidemic, anti-hypertensive, anti-diabetic, and anti-tumour activities. Among this, its anticancer effects make chrysin promising to be a candidate drug. The objective of this study was to develop a new certified reference material (CRM) for the quality control of traditional Chinese medicine, chrysin, and the related pharmaceuticals. The studies of sample preparation, homogeneity, stability, value assignment, and uncertainty evaluation were accomplished in this paper. Two different methods, namely differential scanning calorimetry and coulometric titration, were utilized for the first time to determine the purity of chrysin. The purity of the highpurity chrysin CRM, after validation and evaluation, was certified to be (0.996 ± 0.015) g/g (k = 2).

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Short- and long-term stability of electrolytic conductivity certified reference materials

Deleebeeck¹,

Avnskjold²,

Snedden³

2020

Accred Qual Assur

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Certification of a low value electrolytic conductivity solution using traceable measurements

Cited by 6 publications

References 11 publications

The Effect of Packaging Type and Storage Temperature on the Short Term Stability of Electrolytic Conductivity Reference Materials

The Effect of Packaging Type and Storage Temperature on the Short Term Stability of Electrolytic Conductivity Reference Materials

Development of a new certified reference material of high-purity chrysin for the quality control of traditional Chinese medicine

Short- and long-term stability of electrolytic conductivity certified reference materials

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