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The iris portable spectrophotometer is unlike any of the products we have created in the past. It is different from our photometers as it allows for measurement in the spectrum of all wavelengths of visible light and not just pre–specified wavelengths. Spectrophotometers work by isolating light at specific wavelengths from white light. This compact meter incorporates a number of features that facilitate both fantastic performance and exceptional usability.


Advanced Split-Beam Optical System

The optical system is the heart of a spectrophotometer. Ensuring the optical system is built with the best design and highest quality materials will guarantee accurate readings and a long life for the meter. When developing this meter our research and development team paid special attention to details and combined many small improvements to a typical spectrophotometer design to create a meter with unprecedented performance.

Universal Covette Holder and Auto-Recognition

The cuvette holder built into the meter holds both 22 mm round cuvettes and rectangular cuvettes with a 5 cm path length. Adapters for the cuvette holder are available to hold other 13 and 16 mm round cuvettes, and 10 mm square cuvettes. Rectangular cuvettes have longer path lengths which result in higher sensitivity in readings of low absorbance samples. Additionally, the meter permits the selection of the size of the cuvette used in custom user methods from the available sizes. For all methods, the programmed cuvette size is displayed on the screen to ensure the correct cuvette size is used, ensuring that the proper path length is being used by the meter when calculating measurements.

Customized Methods

Step–By–Step Method Creation with up to 10 calibration points and flexible calculations for multi wavelength method.

Creating a customized method is easy and intuitive. The HI801 guides you step–by–step through the process of creating your own custom method. The intuitive user interface will guide you through naming your method, setting the measurement wavelengths, creating reaction timers, and calibrating the method. Up to 10 points can be used to calibrate methods.

Favorite Methods

Always have your most frequently used methods readily available with the favorite methods feature. Directly from the home screen is access to user–programmed favorite methods, saving time.

Large High Contrast Custom LCD Display

With a 6” display, the screen is large and easy to read. The high contrast makes every character on the display stand out even during outdoor use. The wide viewing angle allows for measurements to be seen from far away, so while working around the lab it is not necessary to hover over the meter to see the measurements.

Capacitive Touchpad

Maneuvering the menus and using the meter is effortless with the capacitive touchpad. Featuring dedicated buttons specifically for setup, logging data, recalling data, and methods allows for quick and easy access to these functions. There is a key beep feature that can be enabled or disabled, for audible feedback that the key was pressed. Additionally, the meter also still recognizes key touches even through gloves.

Data Logging and Transfer

Transferring data from a meter should always be simple and straightforward. Impressively the meter can store up to 9999 measurements in the memory. At any time data can be transferred to a PC or Mac as either a CSV or PDF file. No software is required, simply plug in a flash drive or plug it into a computer and export the data. The ability to save data as a PDF ensures higher integrity of the data as it cannot be easily changed. Additionally, a meter ID and a sample ID can be programmed to be saved along with logged measurements. With technical equipment wide–spread connection compatibility can often be an issue, which is why the iris features USB ports for both flash drive and a direct computer connection. Connectivity with a USB–A port to a flash drive can be used to transfer logged measurements from the meter and also to transfer method updates onto the meter. The USB–B port is used for a direct connection to a computer specifically for transferring logged data.

HI808-11 Holmium Filter

Validate iris Wavelength Accuracy

The HI801-11 is a holmium oxide glass filter that is used to validate the wavelength accuracy of the HI801 iris spectrophotometer. The filter is mounted in a 10 mm square anodized holder and comes with a protective plastic holder that protects the filter when not in use.

  • Glass filter mounted in anodized aluminum holder
  • Fits all spectrophotometers that can accommodate 10 mm square cuvette
  • Absorbance peaks measured at 361, 454, 536, and 638 nm

Holmium Oxide Filter

Supplied with certificate of analysis traceable to SRM2034
All Values are certified and have an uncertainty of less than 0.1nm
Packaged in a light-tight, plastic cuvette holder

About Holmium

Holmium is a rare earth element that is silvery white and malleable. Holmium reacts with oxygen to form holmium oxide. Glasses that contain holmium oxide or holmium oxide solution are useful in the calibration of spectrophotometers due to their sharp absorption peaks in the visible spectrum.

The National Institute of Technology (N.I.S.T.), formerly National Bureau of Standards (N.B.S.) uses a holmium oxide solution sealed into silica cuvettes as the standard reference material (SRM 2034) for traceability. The holmium oxide solution is prepared with holmium oxide dissolved in perchloric acid. This solution has many well-defined absorption bands. The SRM2034 was found to be stable for up to thirty years*

The HI801-11 is traceable to SRM2034 and is supplied with a certificate that identifies the peak absorbance values of the filter within 0.1 nm of uncertainty. The HI801-11 holmium oxide filter is used with the wavelength check mode found in the HI801 iris spectrophotometer. The filter is placed into the meter and the wavelength check mode is then used to verify the wavelength positioning. Once the check is complete the meter will display the wavelength peaks and they are compared to the values found on the certificate. The values should be within ±1.5 nm of the certified value.

* NIST Special Publication 260-192

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