LightMeasure UV Exposure Meters

We offer ultra-violet (UV) exposure dose meters (also called 'integrators') designed specifically for artists who work with UV sensitive media such as:

  • Platinum / Palladium printing

  • Cyanotypes

  • Carbon prints

  • Wet Collodion

  • Daguerreotypes

  • Kallitypes, Van Dyke browns

  • Solarplate™, ImagOn™ or similar photopolymer and photogravure processes

  • and similar processes which use UV light to expose an image

We offer two versions of meter, both designed to enable the artist to get perfect exposures every time. The PPM-2 is more suited for manual exposure work, while the PPM-3 is intended primarily for studio work and offers features such as audible alarms and the ability to switch external equipment.

Using one of our meters will allow you to get perfect exposures, without the need to make test strips for every exposure, even when using light sources (such as the sun) where the UV levels might be variable. Initially you use the meter to establish a 'target UV dose' for your combination of light source and medium using test strips in the usual manner - you only need do this one time. You then use this 'target dose' for future prints. You don't need to make any more test strips, simply use the meter to monitor the UV during the exposure step and stop when you reach the target dose.

We encourage you to read our Frequent Questions page for information about measuring different light sources or using different media.

Please see the PRODUCTS page for full details and specifications.

The PPM-2 UV exposure dose meter

The PPM-2 UV exposure dose meter

The PPM-3 UV exposure dose meter

The PPM-3 UV exposure dose meter

Examples of our meters in use by our customers:

Please note that several of these images show the PPM-1 meter which is no longer offered. The PPM-1 was very similar to the PPM-2 except that its sensor was internally mounted. The sensor and operation of the PPM-1 are otherwise identical to the PPM-2 and everything shown here with a PPM-1 can be done using a PPM-2 or PPM-3.

PPM-1 used for polymer photogravure with sun exposure frame - courtesy of Tariq Dajani, Spain.

PPM-1 used for testing uniformity of UV source - courtesy of Kees Brandenburg, Netherlands

PPM-2 with a vacuum exposure frame for Van Dyke Brown and Platinum/Palladium printing - courtesy of Mark Hilliard, South Carolina

PPM-1 used as a UV densitometer for negatives, with a 365nm LED source - courtesy of Kees Brandenburg, Netherlands

PPM-1 and large format cameras for direct capture of platinum images - courtesy Scott B. Davis, California

PPM-1 used for monitoring SolarPlate (TM) exposure dose, using sun for exposure and vacuum bag - courtesy of Ian Parker, California.

PPM-2 monitoring exposure with an Eskofot plate burner - courtesy of Kees Brandenburg, Netherlands

Rene Smets (2).jpg

PPM-1 used for monitoring ambient UV intensity in the studio - courtesy of Ian Parker, California.

PPM-2 monitoring the exposure of Daguerreotypes and Collodion plates - courtesy of   René Smets  , Belgium (see this   article   for more details)

PPM-2 monitoring the exposure of Daguerreotypes and Collodion plates - courtesy of René Smets, Belgium (see this article for more details)

Some Articles on the Web:

  • Here is a brief review of our PPM-2 meter used for collodion plates and daguerreotypes - courtesy of Jacques Kevers & René Smets, Belgium

  • Use of a PPM-2 meter to map the uniformity of a studio UV fluorescent tube array - courtesy of Ian Leake