Performance Specification for Tensiometer-SOLICITATION 1-057-RCA1371

-   The instrument shall be capable of contact angle measurements of
    powders and fiber bundles and adsorption behavior of liquids on
    wettable materials.

-   The instrument shall be capable of dynamic contact angle and the
    surface energy measurements of fine prismatic and cylindrical
    samples. The dynamic contact angle measurement on single fibers must
    be feasible down to 3 micron diameter.

-   The instrument shall be capable of static surface and interfacial
    tension measurements of liquids.

-   The instrument shall be capable of surfactant critical micelle
    formation concentration (CMC) measurements according to Wilhelmy
    Plate method, Leanard Frame method or Du Nouy Ring method.

-   The instrument shall be capable of density measurements of liquids.

-   The instrument shall have a measurement range for surface and
    interfacial tension at least 1 to 1000 mN/m with a resolution of ±
    0.001 mN/m.

-   The instrument shall have a weighing range at least 10 µg to 210 g
    with a weighing resolution of 10 µg.

-   The instrument shall have a displacement speed of the sample stage
    at least 0.04 to 500 mm/min.

-   The instrument shall have a position resolution of 0.1 µm and a
    maximum lifting length of 105 mm.

-   The instrument shall have the capability to measure a temperature in
    the range of at least -60°C to 450° with a resolution of 0.01°C.

-   The option of a non-magnetic version system with a removable stirrer
    system shall be included.

-   The software module for contact angle/surface energy calculation
    shall have the capability to calculate surface free energy of solids
    according to at least 9 user selectable theories. It shall have a
    liquid database of physical and chemical parameters for at least 200
    liquids, with programmable user functions.

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-   The instrument shall have a high precision electro-dynamic
    compensation weighing system with automatic calibrating function.

-   The instrument shall have software controlled motorized height
    positioning of the sample containers with variable speed.

-   The instrument shall have integrated measuring and control
    electronics with digital thermometer.

-   The instrument shall have an on-line graphical display of the
    instrument status including weighing data, temperature and other
    measuring parameters.

-   The instrument shall have an illuminated sample chamber with inlets
    for inert gas.

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-   The instrument shall have an electronic auto-diagnostic system and
    an auto-calibration, auto-zero system.

-   The instrument shall have a software controlled Balance Locking
    system.

-   The instrument shall have an integrated magnetic stirrer
    (nonmagnetic design).

-   The instrument shall be capable of a software-control on both
    precision Liquid Dosing Unit (LDU) and Dosimat for continuous CMC
    measurement.

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-   The first year warranty shall include all labor (on site and travel
    time), unlimited applications and service phone support. Within the
    warranty period the instrument should be entitled to free software
    updates. In addition, all electrical parts should be extended to 2
    years (24 months) under no-fault conditions.