X-Rite 331C Portable Transmission Densitometer

X-Rite 331C Portable Transmission Densitometer

Ideal for use in the Field or Lab

Note: This product has been discontinued, the replacements are:

LCNDT DT-100 LCNDT DT-200 Eseco SM-12



The New 331C Transmission Densitometer is portable and compact, yet has the same accuracy and repeatability as larger countertop units, measuring densities up to 4.0D


  • Built-in light table eliminates the need for an external light source and easily accommodates film up to 11"
  • NiMH battery delivers greater than 2,000 measurements per battery charge; a 333% improvement over the old 331!
  • Takes only 1 hours to fully charge from a discharged state, compared to 14 hours with the old battery!
  • Uses standard 12VDC battery charger and is considerably more power efficient! The charger is only active when the battery requires charging.
  • Push Button Zeroing
  • "Sleep" mode powers down the instrument when not in use to conserve battery power
  • LED light indicates the instruments' charging status
  • Easy to reach touch pad!
  • EnergyStar Compliant!
  • Comes with a certified step wedge and instrument case



Measuring Range:
0 - 3.5D (1 mm), 0 - 4.0D (2 mm)
Operating Temperature Range:
10° - 40°C / 50° - 104°F
Warm-Up Time:
Power Requirements:
100 - 240V - 50/60 Hz
Scale Factor (slope) Stability:
± 1% per 6 months
Power Supply:
Four rechargeable AA NiMH batteries and charger
Zero Stability per 8 hours:
±.02D (.01 typical)
Height: 2.0" (5.08 cm)
Width: 2.9" (7.46 cm)
Length: 7.0" (17.78 cm)
Measuring Area:
1 & 2 mm
Measuring Length:

5.5 in.
1.5 lbs. (680 grams)

X-Rite 331 Includes:

  • 331 Densitometer
  • 1 and 2 mm Aperatures
  • Calibration Strip
  • Calibrating Screwdriver
  • NiMH Battery
  • Power Supply, 12 Volt
  • Calibration Certificate
  • Soft Vinyl Carrying Case

This unit comes with a full 1 year manufacturers' warranty

Note: There will be a $25 small order fee for X-Rite orders under $200.

Description Part # Saved Price Select Option Add to
X-Rite 331C Portable Transmission Densitometer RT-XTDM-331C Discontinued Item
X-Rite 301 Aperture Set (1, 2, & 3 mm) 319-40 RT-XTDM-319-40 Discontinued Item
X-Rite Calibrating Screwdriver for 301 and 331 Series RT-XTDM-SD117-01 Discontinued Item
X-Rite NiMH Battery for 331C RT-XTDM-SE15-43 Discontinued Item
X-Rite Power Supply, 12 Volts - 331C RT-XTDM-SE30-277 Discontinued Item
X-Rite Soft Vinyl Carrying Case for 331 Series RT-XTDM-B318-38-01 Discontinued Item