The OHAUS MB92 is a high-performance laboratory moisture analyzer designed for users who need precise moisture testing together with more advanced method control, result management, sample identification, and touchscreen operation.
It combines a 90 g precision balance with 0.001 g readability and 0.01% moisture readability with OHAUS carbon-fibre infrared heating over a programmable 40°C to 200°C temperature range.
Where the MB62 is designed around flexible multi-method routine testing, the MB92 adds a 4.3-inch full-colour capacitive touchscreen, 200-result storage, user-defined Sample Name, Sample ID and Batch ID fields, live drying curves, statistics, USB host connectivity, and a customizable shutoff criterion.
This makes the MB92 particularly well suited to Canadian food and beverage QA/QC laboratories, industrial and manufacturing quality departments, research and product-development labs, agriculture and feed testing, and other organizations where moisture results need to be repeatable, organized, reviewable, and easier to manage across multiple products or operators.
The MB92 makes the most sense when your laboratory needs the method flexibility of a professional moisture analyzer but also wants better result management, a touchscreen interface, customizable sample identification, and stronger published repeatability.
The MB92 sits above the MB32 and MB62 in OHAUS's current carbon-fibre moisture analyzer family. It maintains the same 90 g capacity and 0.001 g weighing readability while adding stronger result-management and operator-interface features.
| Feature | MB32 | MB62 | MB92 | MB120 |
| Best Fit | Routine testing | Flexible multi-product testing | High-performance testing & data management | Flagship method development & larger libraries |
| Capacity | 90 g | 90 g | 90 g | 120 g |
| Weight Readability | 0.001 g | 0.001 g | 0.001 g | 0.001 g |
| Moisture Readability | 0.01% | 0.01% | 0.01% | 0.01% |
| Repeatability – 3 g | 0.15% | 0.10% | 0.08% | Refer to MB120 method requirements |
| Repeatability – 10 g | 0.02% | 0.018% | 0.015% | Refer to MB120 method requirements |
| Heating | Carbon fibre | Carbon fibre | Carbon fibre | Halogen |
| Temperature Range | 40–180°C | 40–200°C | 40–200°C | 40–230°C |
| Drying Profiles | 2 | 4 | 4 | 4 |
| Stored Methods | 2 | 20 | 20 | 100 |
| Stored Results | 1 | 100 | 200 | 1,000 |
| Interface | 4 in. LCD + knob | 5 in. LCD + knob | 4.3 in. colour touchscreen | 4.3 in. colour touchscreen |
| USB Host | No | No | Yes | Yes |
Choose the OHAUS MB32 when you need straightforward routine moisture testing and only a small number of methods.
Choose the OHAUS MB62 when you need 20 methods and flexible drying programs but do not require touchscreen operation, advanced sample identification, or 200-result storage.
Choose the MB92 when higher published repeatability, touchscreen operation, live drying curves, statistics, user-defined sample and batch identification, USB host connectivity, and additional result storage are valuable to your workflow.
Consider the MB120 when you need 120 g capacity, temperatures up to 230°C, SmartGuide method development, up to 100 stored methods, or substantially greater result storage.
| Laboratory Challenge | How the MB92 Helps |
| Different products need different drying conditions | Store up to 20 methods with different temperatures, profiles, and shutoff criteria. |
| Results need to be associated with a batch or product | User-defined Sample Name, Sample ID, and Batch ID fields improve result identification. |
| Operators need to see how a sample is drying | The touchscreen can display a live drying curve during the analysis. |
| A standard automatic endpoint is not suitable | The custom free mg/s criterion allows a user-defined weight-loss-per-time endpoint. |
| Recent results need to remain available | The instrument stores up to 200 test results. |
| Important methods should not be changed accidentally | Enhanced password protection helps control access to important settings and data. |
| Routine cleaning takes too much time | Tool-free heating-chamber components and a glass panel simplify access for cleaning. |
The MB92 can be used to develop rapid moisture or percent-solids methods for suitable grains, powders, bakery products, ingredients, intermediate materials, and finished products.
Twenty stored methods, user-defined sample identification, batch information, and 200-result storage are especially useful when a quality laboratory routinely tests several products.
Suitable grain, seed, feed ingredient, powder, soil-related, and agricultural samples can be evaluated when a thermogravimetric moisture or loss-on-drying procedure is appropriate for the application.
The MB92 can provide rapid feedback for suitable incoming materials, formulations, in-process samples, powders, resins, and finished products where moisture or loss on drying is an important quality parameter.
Standard, Fast, Ramp, and Step drying programs combined with customizable endpoints give researchers flexibility when developing methods for samples with different thermal or drying behaviours.
The MB92 can be useful for moisture or percent-solids measurements on suitable sludge, residue, soil, or process samples where a laboratory-developed or validated thermogravimetric procedure is appropriate.
The MB92 should not automatically be substituted for a prescribed Total Suspended Solids (TSS) method. Standard TSS procedures generally require filtration of a measured sample followed by drying and weighing the retained residue. Follow the required regulatory or laboratory method when compliance reporting is involved.
The touchscreen interface, status light, stored methods, batch identification, and result memory can make the MB92 practical for recurring moisture checks closer to the production process, provided the environment and test method are suitable for the instrument.
The MB92 uses thermogravimetric moisture analysis. The instrument records the starting weight of the sample and then heats it while continuously monitoring the change in mass.
As moisture and other volatile material leave the sample, its measured weight decreases. The MB92 calculates the result from the relationship between the starting and final mass.
Results can be displayed as moisture content, dry content / percent solids, moisture regain, weight, time, temperature, drying curve, and statistics.
Thermogravimetric moisture analysis does not chemically distinguish water from every other volatile substance. If a sample contains solvents or other volatile compounds, those compounds may also contribute to the measured mass loss. Method development should consider the chemistry of the sample and the required reference procedure.
Standard mode heats the sample to the selected target temperature and maintains it until the chosen shutoff criterion is reached.
Fast mode applies a stronger initial heating stage before settling toward the programmed test temperature. It can reduce analysis time for suitable samples that tolerate more aggressive heating.
Ramp mode increases the temperature gradually. It can be useful for temperature-sensitive materials or samples that may form a crust, caramelize, or decompose if heated too quickly.
Step drying allows multiple temperature stages to be programmed so a sample can be dried under different conditions during different phases of the test.
A moisture test should end when the selected endpoint has been reached, not simply because a convenient amount of time has passed.
The MB92 provides five automatic criteria, timed operation, manual operation, and a custom free mg/s endpoint based on user-defined weight loss over time.
This added control can be valuable during method development or for products where a standard automatic criterion does not produce the desired correlation with a reference method.
The MB92 goes beyond displaying a final moisture percentage. The touchscreen can show a live drying curve while the test is running, helping users see how quickly mass is changing as the sample dries.
Results can also include statistical information and be associated with user-defined Sample Name, Sample ID, and Batch ID information.
These features are particularly useful in QA/QC environments where several products, batches, or production lots are tested on the same analyzer.
The MB92 has a maximum capacity of 90 g and a minimum starting sample weight of approximately 0.5 g.
There is no single ideal sample size for every material. OHAUS publishes repeatability specifications using 3 g and 10 g samples, but the appropriate sample mass depends on the material, expected moisture content, desired test time, sample uniformity, and required repeatability.
Samples should generally be representative and spread in a thin, even layer across the 90 mm sample pan. Thick or uneven samples can dry differently at the surface and centre and may increase analysis time.
Glass-fibre pads can help with suitable liquids, pastes, melting samples, fat-containing samples, or materials that benefit from increased surface area during drying.
OHAUS lists MB92 repeatability at 0.08% with a 3 g sample and 0.015% with a 10 g sample under stated test conditions. A larger sample may improve repeatability in some applications but can also increase drying time, so sample size should be established as part of method development.
| Model | OHAUS MB92 |
| OHAUS Part Number – 110 V | 30971930 |
| Maximum Capacity | 90 g |
| Minimum Start Weight | 0.5 g |
| Weight Readability | 0.001 g / 1 mg |
| Moisture Readability | 0.01% |
| Repeatability | 0.08% with 3 g sample; 0.015% with 10 g sample |
| Recommended Moisture Content | 0.5% to 100% |
| Moisture Range | 0.01% to 100%; up to 1000% in regain mode |
| Heating Element | Carbon-fibre infrared heater |
| Temperature Range | 40°C to 200°C in 1°C increments |
| Drying Profiles | Standard, Fast, Ramp, Step |
| Stored Methods | 20 |
| Stored Results | 200 |
| ID Management | User-defined Sample Name, Sample ID and Batch ID |
| Shutoff Criteria | 5 automatic, timed, manual, custom free mg/s |
| Display | 4.3 in. full-colour capacitive touchscreen |
| Displayed Information | MC%, DC%, RG%, weight, time, temperature, method name, drying curve and statistics |
| Communication | RS232, USB device, USB host |
| Status Indicator | Multi-colour status light |
| Weight Adjustment | External 50 g mass |
| Temperature Adjustment | 100°C and 160°C |
| Pan Diameter | 90 mm / 3.5 in. |
| Dimensions | 210 x 138 x 352 mm / 8.3 x 5.4 x 13.9 in. |
| Net Weight | 4.3 kg / 9.5 lb |
| Operating Temperature | 10°C to 40°C |
| Power – Canadian / North American Model | 120 VAC, 50/60 Hz |
| OHAUS Part Number | Accessory |
| 30585411 | Aluminium Sample Pans – 50 pack |
| 31087438 | Glass Fibre Filter Set – 100 pack |
| 80252477 | Sample Cage |
| 80252478 | Reusable Pan Set – 7 mm |
| 80252479 | Reusable Pan Set – 14 mm |
| 30284477 | Scoop Accessory – MB9x / MB120 |
| 11113857 | MB Series Temperature Calibration Kit |
| 30304101 | RS232-to-USB Interface Kit |
The MB92 is particularly well suited if your answer is “yes” to several of these questions:
If most of those features are unnecessary, the OHAUS MB62 may offer better value. If you need substantially more stored methods, more result capacity, SmartGuide method development, temperatures above 200°C, or 120 g capacity, consider the MB120.
The MB92 is used for thermogravimetric moisture determination, percent-solids determination, moisture-regain determination, and weighing in laboratory, QA/QC, research, and suitable production environments.
The MB92 requires a minimum starting sample weight of approximately 0.5 g and has a maximum capacity of 90 g. The ideal sample weight depends on the sample, method, expected moisture level, and required repeatability.
There is no universal best sample weight. OHAUS publishes repeatability of 0.08% using a 3 g sample and 0.015% using a 10 g sample. Larger samples can improve repeatability in some applications but may also require longer drying times.
Both models provide 90 g capacity, 0.001 g readability, carbon-fibre heating, four drying profiles, 20 stored methods, and temperatures up to 200°C. The MB92 adds higher published repeatability, 200-result storage, a full-colour touchscreen, live drying curves, statistics, user-defined Sample Name, Sample ID and Batch ID fields, USB host connectivity, and a custom free mg/s shutoff criterion.
The MB32 is designed primarily for straightforward routine moisture testing. The MB92 adds a wider temperature range, four drying profiles, 20 methods, 200 stored results, touchscreen operation, advanced sample identification, live drying curves, statistics, additional connectivity, and stronger published repeatability.
The MB92 uses carbon-fibre heating, has a 90 g capacity, stores up to 20 methods and 200 results, and reaches 200°C. The MB120 uses halogen heating, increases capacity to 120 g, reaches 230°C, stores up to 100 methods and 1,000 results, and includes SmartGuide method-development functionality.
The MB92 can store up to 20 moisture-analysis methods.
The MB92 stores up to 200 results across its method library.
Yes. The MB92 uses a 4.3-inch full-colour capacitive touchscreen.
Yes. The MB92 supports user-defined Sample Name, Sample ID, and Batch ID information, helping laboratories associate results with specific products or production lots.
Yes. The MB92 can display a live drying curve so users can observe how sample mass changes over the course of the test.
Yes. Statistics are included among the information that can be displayed with MB92 results.
Yes. It can be used for suitable food and beverage samples after the correct sample preparation, sample weight, temperature, drying profile, and endpoint have been established for that product.
Suitable liquids and pastes can be tested when an appropriate method is developed. Glass-fibre pads may help distribute these samples over a larger area and promote more consistent drying.
The MB92 can support moisture or percent-solids testing of suitable sludge or residue samples when the procedure permits it. It should not automatically replace a prescribed TSS method, which generally requires filtration followed by drying and weighing of the retained material.
No. Thermogravimetric moisture analysis measures mass lost during heating. If the sample contains solvents or other volatile substances, they may also contribute to the measured loss.
It can provide much faster results for suitable samples, but the moisture-analyzer method should be validated against the laboratory's accepted reference method before replacing an established oven procedure.
It can replace many older analyzers from a workflow perspective, but existing methods should be verified or revalidated because heater technology, chamber design, endpoints, and sample behaviour can differ between instruments.
Yes. The MB92 provides RS232, USB device, and USB host connectivity for compatible data-transfer and printing workflows.
Cambridge Environmental Products supplies the OHAUS MB92 Moisture Analyzer in Canada with CAD pricing, sample pans, glass-fibre pads, calibration equipment, accessories, and support for Canadian food and beverage, agriculture, environmental, industrial QA/QC, research, and production laboratories.
Cambridge Environmental Products supplies OHAUS moisture analyzers, consumables, calibration accessories, and related moisture-testing equipment across Canada.
If you are replacing an oven method or another moisture analyzer, send us your sample type, expected moisture range, typical sample weight, current drying temperature and method, number of products tested, required test time, and documentation requirements.
The MB92 is particularly well suited to laboratories that need strong moisture-analysis performance together with touchscreen operation, more complete sample identification, live drying information, and greater onboard result management.
Send Cambridge your sample and current testing procedure and we can help determine whether the MB32, MB62, MB92, MB120, or another moisture analyzer is the better fit.
