표준물질 (Reference Material : RM)

하나 이상의 지정된 양에 대하여 충분히 균질하고 안정하여 측정시스템의 교정이나 측정절차의 평가 또는 같은 종류의 다른 물질의 양의 값과 측정불확도를 설정하는데 사용되는 물질 (CRM 목록)
장치의 교정, 측정방법의 평가 또는 어떤 물질의 물성값을 부여하기 위하여 사용되도록 그 특성치가 충분히 균질하고 잘 설정된 재료 또는 물질을 말한다.(국가표준기본법)
측정이나 명목특성의 시험에 사용할 목적으로 만들어진 명시된 특성에 관하여 충분히 균질하고 안정된 물질 (측정학 용어집)

인증표준물질 (Certified Reference Material : CRM)

공인된 인증서가 첨부되고 각 지정된 양에 대하여 인증값, 측정불확도가 명백히 규정된 측정학적 소급성 고리가 포함된 표준물질 (CRM 목록)
공인된 기구에 의해 발급된 문서를 동반하는 유효한 절차를 사용하여 한개 이상의 명시한 특성값과 연계불확도, 그리고 소급성을 제공하는 표준물질 (측정학 용어집)

Refractive Index Standards

Paragon Scientific produces a range of sucrose standards for use in the calibration and verification of all types of refractometer e.g. handheld, Abbe and high accuracy digital instruments. Sucrose standards are manufactured using traceable high purity materials to four decimal places following ICUMSA methods. These are the first standards available worldwide which carry a full ISO 17025 / ISO Guide 34 certificate of calibration with each bottle.

Oil RI standards

Refractometer Calibration

Calibration Oils are one of the most commonly used materials for calibrating refractometers as they have good traceability, particularly to NIST. Having a high temperature co-efficient, Calibration Oils are best used where strict temperature control is adopted either by Peltier or external waterbath between 10 and 75 °C as well as with refractometers operating at ambient by making use of supplied tables or an RI/°C Temperature Calculator as long as the prism temperature is reliably known.

Calibration Oils are commonly used within the food, beverage, sugar, pharmaceutical, petro-chemical and chemical industries as well as in specialist high temperature applications such as confectionery manufacturing and edible oil blending, where evaporation of other CRMs such as water or sucrose during calibration is of concern.

Calibration Oils are supplied in multi-packs of 5 x 5ml bottles with a Certificate of Calibration, SDS and pipettes and have an expiry date 12-months from date of dispatch.

Uncertainties:

The reported expanded uncertainty of measurement is stated as the standard uncertainty of measurement in units of Refractive Index (RI) multiplied by the coverage factor k=2, which for a normal distribution corresponds to a coverage probability of approximately 95%. The standard uncertainty of measurement has been determined in accordance with publication EA-4/02.

http://www.paragon-sci.com/products-and-services/products/calibration-standards/refractive-index-standards/oil-ri-standards.html?___store=default

Sucrose Brix/RI Standards

Paragon ISO 17025 and ISO Guide 34 certified brix standards are for the calibration and verification of all types of refractometer e.g handheld, Abbe and high accuracy digital instruments. Typically used within the food and beverage and pharmaceutical industries.

UKAS Certification Logos

- Certified according to ISO 17025 / ISO Guide 34 under UKAS accreditation
- Primary level refractive index standards traceable to National Standards
- Manufactured in accordance with ICUMSA Methods
- Supplied in tamper evident packs with 6 weeks shelf life
- Manufactured in the United Kingdom
- Monthly delivery contracts available for economy and convenience

http://www.paragon-sci.com/products-and-services/products/calibration-standards/refractive-index-standards/sucrose-brix-ri-standards.html?___store=default