NIST-Traceable Absorbance Standards

Verify the accuracy of your Ocean Optics spectrophotometer system and other instrumentation with our NIST-traceable absorbance standards. The two calibration standards kits (STAN-ABS-UV for ultraviolet, and the STAN-ABS-VIS for visible wavelength ranges) each contain a background reference for low, medium, and high absorbance standards, which should read within +/- 5% of the absorbance data provided. The absorbance standards are ready to use; preparation time and potential dilution errors are eliminated. All standards are non-toxic, non-carcinogenic, and have a one-year shelf life.

Our UV and VIS standards are available in two separate kits; each priced at only $430.

The STAN-ABS' polymer-based standards are submicron, non-surface charged, solid spheres in matrixes of ultrapure water. The standards' small bead size, coupled with Brownian motion, ensures that the polymer spheres stay in a homogenous suspension.

The STAN-ABS-UV kit is certified from 200-450 nm while the STAN-ABS-VIS kit is certified from 400-900 nm. NIST-traceable certificates, user instructions and data charts are provided in each kit.

Key features of the Ocean Optics absorbance standard kits:

• NIST-traceable – NIST-traceable certificates accompany each kit; the
  kit-to-kit lot variance is better than +/- 1%. Absorbance charts are supplied with data collected on NIST-calibrated instruments.

• Stable – The standards are comprised of microsphere polymer beads suspended in ultrapure water and will not settle out of solution.

• Non-toxic, non-carcinogenic – No special handling, storage or disposal precautions need to be taken with the Ocean Optics standards. Material safety data sheets are supplied with each kit.

• Easy-to-use – The Ocean Optics standards are poured directly from their
  125-mL bottles without dilution or special sample preparation. The standards are not photosensitive and do not require refrigeration.

• Cost-effective – Available for only $430, the kits contain a volume of standards that can provide up to 100 calibrations. The standards have a one-year shelf life.

Absorbance Standards Applications

Optical instrumentation should be calibrated with reliable standards to ensure accurate measurements. The regular use of absorbance standards ensures careful assessment of clarity, particle counts, sizes and colors. The precision and ease of use of absorbance standards make the standards attractive to many industries. For example, absorbance standards are used in the biomedical and pharmaceutical industries, where stringent quality control requirements are commonplace. The food and beverage, petrochemical, semiconductor, and paper and pulp industries all benefit from using these standards as well. For instance, the food and beverage industry uses absorbance standards to calibrate instruments that monitor the clarity of liquids such as beer, wine and juices.

Brownian Motion (just in case you were wondering)

Brownian motion is the observed movement of small particles as the molecules of the surrounding medium randomly bombard them. Scottish botanist Robert Brown first observed this phenomenon in 1827. Albert Einstein developed the first mathematical theory of Brownian motion in 1905; for this work he received the Nobel Prize.

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