All Photos(1)




Real Crystal® IR sample cards

KBr, aperture diam. 15 mm

Sign Into View Organizational & Contract Pricing





pkg of 25 ea


IR spectroscopy: suitable

aperture diam.

15 mm

Looking for similar products? Visit Product Comparison Guide

General description

Inexpensive and disposable, perform like traditional salt plates and are ideal for liquids, mulls, casting films from solutions, and pyrolysis samples.
These cards provide a conveniently mounted, non-absorbing substrate for qualitative infrared analysis. Substrates are impervious to atmospheric moisture. Optional square crystal cover slips may be used with 19 mm aperture cards to sandwich sample between window in sample card and cover slip for mulls and liquid samples.
  • NaCl, KBr, or KCl windows
  • Three apertures: 9.5, 15, and 19 mm
  • Transmission: 80+% for 15 and 19 mm, 70+% for 9.5 mm apertures
  • Optional crystal cover slips (for 19 mm aperture only) facilitate running mulls and liquids
  • Card size: 2 × 4 in., fit universal slide mount of any spectrometer

Legal Information

Real Crystal is a registered trademark of International Crystal Laboratories Corp.

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).


Product Number
Pack Size/Quantity

Additional examples:





enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service