Marmonix MDS-100A (MDS100A / MDS 100A) Digital Shore A Durometer, 0–100 HA

The Marmonix MDS-100A Shore A durometer (also typed MDS100A or MDS 100A) gives a digital hardness number from 0 to 100 HA for rubber, elastomers, soft plastics and leather, to ±1 Shore with 0.1 Shore steps. The reading appears on an LCD instead of a needle, Data Hold keeps it on screen after the gauge is lifted, and auto power-off protects the 9 V battery that ships with it. The 8 mm pressure foot sits on a body of 160 × 60 × 30 mm and 200 g, and a calibration feature is listed in the datasheet (part number 7603791). Browse the Marmonix hardness testers or the MTS-B-A7 Shore A test block set for checking the gauge.

The MarMonix MDS-100A is a professional-grade digital hardness tester engineered for the precise measurement of soft, flexible materials. Optimized for the Shore A scale, this instrument is the industry standard for evaluating the hardness of elastomers, natural rubber, neoprene, soft PVC, and leather.

Equipped with a high-resolution digital LCD, the MDS-100A eliminates the common errors found in manual analog gauges, providing immediate and reliable data for laboratory R&D or on-site quality control. Its lightweight, ergonomic build is designed for one-handed operation, ensuring efficient inspections across production lines and field environments.

MarMonix MDS-100A Short Highlights

The MDS-100A offers:

• Scale: Optimized for Shore A testing of soft materials and elastomers.

• Precision: High-accuracy digital performance with ±1 Shore precision.

• Resolution: Provides ultra-fine increments of 0.1 Shore for detailed analysis.

• Efficiency: Includes a Data Hold function and auto power-off to save battery.

• Reliability: Features a 2-year warranty and a built-in calibration feature.

• Portability: Compact, 200 g design for effortless handheld operation.

MarMonix MDS-100A Technical Specifications

Case study: reading a gasket batch against its Shore A limit

A rubber gasket drawing usually states a hardness such as a nominal Shore A value with a plus-and-minus band. The question at goods-in is whether a reading near the edge of that band is a real failure or just measurement spread, and the MDS-100A figures answer it.

How the inspector works with the gauge:

• Know the spread: ±1 Shore accuracy means a display of 70.0 stands for roughly 69 to 71 HA, so a part within 1 Shore of the limit is re-tested rather than rejected on one press.
• Use the fine steps for trends: the 0.1 Shore resolution shows small drifts between lots that a whole-number gauge would hide.
• Freeze, then write: Data Hold keeps the value after the foot is lifted, so each reading is copied to the sheet without holding the gauge on the part.
• Check the gauge first: a reading on a known Shore A reference block at the start of the shift confirms the instrument before parts are judged.
• Mind the room: the gauge is rated for 0 to +50 °C and is stored dry at room temperature between shifts.

Several presses on fresh spots, averaged and logged with the batch number, give a hardness record that a supplier can compare with their own figures.

MDS-100A Shore A durometer: buyer questions

What does ±1 Shore mean on the MDS-100A?

A displayed value can differ from the true hardness by up to 1 Shore A point. A 70.0 HA reading means about 69 to 71 HA.

Does the MDS-100A keep the reading after I lift it?

Yes. Data Hold freezes the last value on the LCD, and auto power-off switches the gauge off when idle to save the 9 V battery.

Where can the MDS-100A be used and stored?

Use it between 0 and +50 °C, and keep it dry at room temperature when stored. At 200 g and 160 × 60 × 30 mm it fits a tool bag.