Rame Hart
The Rame-Hart 290 is a contact angle goniometer and tensiometer. The Rame-Hart 290 measures contact angle, surface energy, surface tension, and interfacial tension. The Rame-Hart 290 features a 3-axis stage with leveling specimen stage, an automated dispensing system, and an automated tilting base.[1][2][3][4]
The contact angle is the angle formed when a drop of liquid meets a solid surface. Contact angle measurement is used to characterize the wetting properties of surfaces by using the Young equation. The Model 290 uses DROPimage Advanced software. The standard configuration includes LED fiber optic backlight illumination and a camera. The standard camera for the 290-U6 configuration has 1920 × 1200 pixel resolution and a maximum frame rate of 2320 frames per second. The standard stage size is 51 × 76 mm.[4][3][1][2]
The Rame-Hart 290 procedure uses a light source, a camera, a specimen stage, and a microsyringe assembly to form and image droplets. The procedure levels the stage before measurement and uses software baseline setup before contact angle analysis. The procedure also supports pendant-drop measurement for surface tension. DROPimage Advanced supports continuous reporting for contact angle and surface tension measurements, and supports in-software control for dispensing and tilting.[6][1][2]
Contact angle goniometers are typically used in metrology and characterization rather than in patterning, deposition, or etch. Contact angle measurements are commonly performed after cleaning, surface treatment, coating, or functionalization steps when surface condition needs to be checked. Contact angle measurements can also be used before bonding, printing, coating, or adhesive application to confirm that a surface shows the intended wetting behavior.
Contact angle is often used to measure cleanliness, roughness, absorption, and surface heterogeneity. The Model 290 supports sessile-drop contact angle work and pendant-drop surface tension work. The Model 290 also supports advancing and receding contact angle studies, contact angle hysteresis, and roll-off angle studies through its automated dispensing and tilting functions.[4][3][1][2]
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The Rame-Hart 290 supports contact angle, surface energy, surface tension, and interfacial tension measurements.[1][2]
The Model 290 includes an Automated Dispensing System and an Automated Tilting Base. The Model 290 also features a standard 3-axis stage.[4][3][1][2]
The Rame-Hart 290 uses DROPimage Advanced software. DROPimage Advanced supports continuous reporting for contact angle and surface tension measurements, and supports in-software control for dispensing, tilting, temperature, and oscillation.[1][2]
The following facts about the 290 are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.
No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the 290 are on record.
Answerable by: OEM historical records or a trade-press announcement
No publicly documented variants, configuration options, or revision breakpoints of the 290 are on record.
Answerable by: an OEM product catalog or an engineer who ordered or specified the tool
The control-system platform and OS era of the 290 are not on record.
Answerable by: an engineer who operated it or OEM installation records
No publicly documented failure modes or field errata for the 290 are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the 290 is not on record.
Answerable by: an OEM datasheet or a fab qualification report
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Last updated Oct 16, 2026.