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Products  > TQC Sheen Machu Test Bath

TQC Sheen Machu Test Bath

The TQC Sheen Machu Test Bath was developed to offer fast and realistic corrosion analysis on metal test panels according to Qualicoat specifications.


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Developed forTQC Sheen, our paint testing specialist brand, the TQC Sheen Machu Test Bath is designed for coating inspection and quality control in laboratories. 

Machu test corrosion analysis  

The Machu test serves as a rapid corrosion test for aluminum and steel. This immersion test for corrosion gives you the opportunity to evaluate the weathering performance of powder coating systems, pigments fading, film haziness or loss of gloss and film.  

In contrast to the comparatively time-consuming salt spray test, the Machu test gives you reliable corrosion test results after a short test period. 

This test is fast and delivers results that typically correlate well with the results of a salt spray corrosion test. So it’s often used as a quick test before a more comprehensive assessment is started.  

During the process your test panel samples are cut down to the metal, scribed and then exposed to a test solution containing natrium chloride, acetic acid and hydrogen peroxide for 48 hours at 37°C. You can then determine the corrosion protection by assessing the infiltration at the scribe.  

Real world environmental conditions

To give an indication of how effectively the Machu immersion test for corrosion recreates the natural weathering process: a 24 hour test equals up to 500 hours in a salt spray chamber. 

Machu test immersion corrosion kit  

When you purchase a Machu Test Bath from TQC Sheen you get the 11 liters of Machu Test Bath itself, a SST steel top lid and perforated base plate and a 4 liter plastic container.  

Quality test performance – as standard! 

The TQC Sheen Machu Test Bath was designed to support testing to Qualicoat and QIB-Spezifikationen international standards.   

This item is also included as an optional extra within the Qualicoat kit.   

Corrosion analysis product portfolio 

Across the Industrial Physics portfolio we have plenty of devices that are designed to recreate realistic, real world testing conditions. 

Our C&W Salt Spray Cabinets were designed to test both components and coated test panels across the whole spectrum of industry. These corrosion analysis test cabinets are reliable, easy to operate and have a robust construction.  

The PosiTest range of pull off adhesion testers swiftly and accurately measure the force required to pull a specified test diameter of coating away from a substrate using hydraulic pressure.  

Immerse yourself in our corrosion test knowledge

We’re always pleased to share the knowledge we’ve gained over decades of making machines to test metal samples, parts and components.  

In the knowledgebase section of our website you’ll find blogs about subjects related to the product on offer on this page. For example, this one explores how to assess car paint quality. Or perhaps you’d consider this blog that asks manufacturers whether they should switch to water based paints of more interest.  


SKU: VF8700

Applications: Corrosion Testing

Materials: Aluminum, Metals, Steel

Dimensions (outside):  338 x 280 x 260 mm / 13,31 ×11,02 × 10,24 inch

Corrosion test controls:  digital controller with jog-shuttle knob

Display:  Illuminated LCD

Contents:  11 L

Sensor:  PT100

Machu Test temperature range:  ambient + 5 °C tot 100 °C / ambient + 41 °F tot 212 °F

Temperature accuracy:  ± 0,1 °C / ± 0,18 °F

Timer: 59 hr for turn-on and turn-off timing

Power:  1,2 kW

Power supply:  220 – 230VAC / 50 – 60Hz

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The Problem

When your customers must be able to rely on your inks and coatings there’s no margin for error in your test and inspection processes. So, settling for second-rate equipment and advice is a risky business! 

The Solution

With several dedicated inks and coatings testing brands in the Industrial Physics family, our industry-leading product portfolio and expertise is even relied upon by leading paint testing laboratories.   

The Result

Artur Palasz, R&D Director at Spektrochem, said:

Many of our customers appreciate Industrial Physics equipment, because it is a world-class apparatus that they know and use in their laboratories. Excellent technical contact, perfect customer service and fast order processing time are undoubtedly additional advantages that determine the choice of Industrial Physics as our permanent supplier of laboratory equipment today and in the future.”

Spares and Accessories

Close View of TQC Art. nr. VF8620

A sturdy, spare plastic box designed for storing test panels.

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Close View of Spare TQC Machu

Spare TQC Machu knife CC2000 – 1mm

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Close View of Spare TQC Machu

Spare TQC Machu knife CC3000 – 1mm

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Delivery, Returns & Refunds

Products offered on our website are available for delivery to addresses worldwide by UPS Courier Service. If UPS does not deliver to a specific region or country, we will notify you and refund you the total amount of your order, using the original method of payment. You can return products in the original packaging and with proof of purchase subject to terms and conditions. Read more