Skip to content


Free and Bound Moisture in Gypsum

Quickly determine gypsum purity

If you work with gypsum, you know how crucial moisture measurement is to making a high-quality product. Computrac® understands; that’s why Computrac has been the de facto industry standard for moisture measurement in gypsum for decades. The Computrac MAX® 4000XL will provide accurate results quickly for free moisture, bound moisture, and gypsum purity. If you need even more information about your gypsum, the Computrac MAX® 5000XL can even determine the residual paper content of recycled wallboard. Whatever your needs, the Computrac® family of moisture analyzers will enable you to quickly obtain reliable, repeatable moisture content results, independent of operator skill.

If you currently use a standard oven or a halogen-based analyzer to test your gypsum, give us a call. Our experienced team of analytical chemists and applications consultants will help you find a quicker, more reliable, and more flexible approach to testing natural, synthetic, or recycled gypsum.

  • Expert Application Support:

    Free sample testing and free application development for as long as you own your Computrac.

  • Accurate:

    Correlate testing to your preferred reference method. Nickel chromium heating element ensures even heating and repeatable results.

  • Durable:

    The Computrac® MAX® series is made in the USA and is built with an all-steel enclosure that can withstand even the toughest testing environments.

  • Fast:

    Up to 100 times faster than standard oven reference methods. Computrac MAX 4000XL’s rapid cooldown system increases throughput by 25% compared to other rapid loss-on-drying instruments.

  • Proven

    The Computrac MAX series has been trusted by the biggest names in gypsum for decades.

Recommended Instruments