The invention discloses an interface tension and contact angle test device and method based on an analytical balance. The device comprises a lifting system, a lifting system bracket, a constant-temperature sample pool, a sample table and a weighing system, wherein the weighing system comprises a platinum plate, a platinum plate bracket, a hook bracket, a sample bracket and the analytical balance; one side of the sample table is fixedly mounted at the output end of the lifting system; the constant-temperature sample pool is mounted on the sample table; the platinum plate is arranged in the constant-temperature sample pool and mounted at the top end of the sample bracket through the platinum bracket and the hook bracket; the bottom end of the sample bracket is mounted on the analytical balance. The device can be widely applied to the industry fields of daily chemicals, pesticides, petrochemical engineering, surfactant research, fire control, electricity and the like, and has a very high promotion value.

Interface tension and contact angle test device and method based on analytical balance

A device for testing stability of emulsions and liquid marbles and a method therefor are provided Aggregation phenomena of liquid drops or the liquid marbles in the emulsions are utilized to test the stability The method can quickly and accurately test the stability of the emulsions and the liquid marbles

A device for testing stability of emulsions and liquid marbles and a method therefor

The invention relates to a gas diffusion velocity measurement device which comprises a cuvette, wherein the cuvette is arranged in a temperature control pool; a group of light-transmitting circular holes is formed between the temperature control pool and the cuvette; an LED light source and a CCD probe are respectively arranged at the positions, opposite to the light-transmitting circular holes, of the outer part of the temperature control pool; the LED light source penetrates through the temperature control pool, the light-transmitting circular holes and the cuvette to be detected by the CCD probe; a temperature sensor is arranged in the cuvette; two opposite hooked needle cylinders are arranged on the cuvette and respectively communicated with a micro pump. According to the gas diffusion velocity measurement device, volume-controllable bubbles can be formed at the set temperature; at the same time an optical measurement method is utilized, the bubbles cannot be disturbed by measurement means in the measurement process, and the accuracy and comparability of measurement results are ensured.

Gas diffusion velocity measurement device and application thereof

The invention relates to a liquid drop non-damage separating device used for a microsyringe. The liquid drop non-damage separating device comprises a micro-sampling assembly, a support assembly, a position adjusting assembly and a super-lyophobic liquid separating piece. The micro-sampling assembly is fixed to a side plate of the support assembly through an elastic clamp, and the super-lyophobic liquid separating piece is fixed to a position adjusting rod of the transverse position adjusting assembly. The liquid drop non-damage separating device has the advantages that the liquid drop position is accurate; quantifying is accurate; application requirements of different fields can be met; operating efficiency can be promoted; the application range is wide.

Liquid drop non-damage separating device used for microsyringe

The invention discloses a method and device for detecting milk SDS by using the surface tension sandwich effect and belongs to the field of milk SDS detection The method comprises the following steps of (1) forming a hanging drop and a sessile drop by a straight probe and a U-shaped probe separately; (2) irradiating the hanging drop and the sessile drop by using a light source, shooting the hanging drop and the sessile drop in a same drop image, and storing the drop image; (3) segmenting the drop image by using multiple interested ranges (ROI) to form a hanging drop region and a sessile drop region; (4) calculating surface tension values of the hanging drop region and the sessile drop region separately; and (5) judging whether the condition of adding sodium dodecyl sulfate (SDS) exists in a milk sample or not According to the method and the device, whether SDS is added to the milk or not and whether the milk is fresh milk or not can be judged

Method and device for detecting milk SDS by using surface tension sandwich effect

The utility model relates to a device for measuring an interaction force between liquid drops or bubbles. On the basis of an original Wilhelmy plate method surface/interface tension gauge, a sampling device for an upper liquid drop or upper gas and a sampling device for a lower liquid drop or lower gas is introduced; the sampling device for the upper liquid drop or the upper gas mainly is a closeable system with an upper needle and a valve; the sampling device for the lower liquid drop or the lower gas is mainly provided with a lower needle; a base is arranged at the bottom of the sampling device for the lower liquid drop or the lower gas; spiral micrometers are arranged on at least two side surfaces of the base and used for adjusting the position of the lower liquid drop or a lower bubble to enable the lower liquid drop or the lower bubble to be aligned with the upper liquid drop or an upper bubble. The device for measuring the interaction force between the liquid drops or the bubbles, obtained by assembling with a micro-force balance and a lifting platform, is simple in structure, reasonable in design and phenomenally visual, and can be used for measuring the interaction force between two liquid drops or two bubbles.

Device for measuring interaction force between liquid drops or bubbles

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Device for measuring interaction force between liquid drops or bubbles