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NIST1921B

IR-Transmissionswellenlänge (Polystyrolfolie)

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About This Item

UNSPSC-Code:
41116107
NACRES:
NA.24
Preise und Verfügbarkeit sind derzeit nicht verfügbar.

Qualität

certified reference material

Qualitätsniveau

100

Verpackung

pkg of 1 card

Hersteller/Markenname

NIST®

Anwendung(en)

general analytical

Verwandte Kategorien

Allgemeine Beschreibung

A unit of SRM 1921b consists of a matte finish polystyrene film approximately 38 µm thick, with a 25 mm diameter of exposed area, centered 38 mm from the bottom of a cardboard holder, which is 5 cm × 11 cm × 0.2 cm in size.

The certification of SRM 1921b is valid, within the measurement uncertainty specified, provided the SRM is handled and stored in accordance with the instructions given in the accompanying certificate (see “Instructions for Storage, Handling, and Use”).

SRM 1921B_cert

SRM 1921B_SDS

Anwendung

This Standard Reference Material (SRM) is intended primarily for use in calibrating the wavelength/wavenumber scale of spectrophotometers in the infrared (IR) spectral region from 3.2 µm to 18.5 µm (540 cm-1 to 3125 cm-1).

Sonstige Hinweise

Please download a current certificate at nist.gov/SRM for current analytes and certified values.

Rechtliche Hinweise

NIST is a registered trademark of National Institute of Standards and Technology
SRM is a registered trademark of National Institute of Standards and Technology

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Flammpunkt (°F)

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Flammpunkt (°C)

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Analysenzertifikate (COA)

Lot/Batch Number

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Fragen

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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 Antwort

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 Antwort

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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