36results about How to "Reliable sampling" patented technology

Disclosed is a composition for the separation of a serum or plasma, which comprises a cyclopentadiene oligomer, can be used for separating a serum or plasma by utilizing the difference in specific gravity among blood components, and enables to provide a serum or plasma having no oily component floating therein after centrifugal separation. The composition comprises a trimellitic acid ester and / or a pyromellitate ester and a cyclopentadiene oligomer. Alternatively, the composition comprises an aromatic esterified compound and a cyclopentadiene oligomer as the main ingredients and additionally comprises an inorganic micropowder and an organic gelling agent as thixotropy-imparting agents, wherein the organic gelling agent is contained in an amount of less than 0.06 parts by weight relative to 100 parts by weight of the cyclopentadiene oligomer.

The invention discloses a fish and plankton collection trawl which comprises a net and a support fixed to the opening of the net. A cod-end is arranged at the bottom of the net; an intercepting device covering the opening of the net is arranged in the support; a plurality of floating balls and iron balls which are detachable are arranged on the side surface of the support; tow lines are arranged at the edge of the support. The fish and plankton collection trawl can realize accurate collection of fish and plankton at different water levels.

The invention relates to an integrated safety index balanced reaction device which is characterized by comprising a box body and a controller, wherein the box body is internally provided with a to-be-detected water sample chamber and a balanced reaction chamber which are separated by a partition plate; a liquid level control alarm is hoisted on a box cover; a water sample overflow opening is formed in the upper part of the partition plate; a calcium carbonate particle filler module wrapped by a filter screen is arranged in the balanced reaction chamber; the box body is provided with a water sample inlet and a water sample outlet of the to-be-detected water sample chamber; a water sample inlet of the to-be-detected water sample chamber is connected with a water sample source by virtue of a water sample inlet electromagnetic valve and a manual flow adjusting valve; a water sample outlet of the to-be-detected water sample chamber is connected with a pre-filter sampling tube by virtue of a water sample outlet electromagnetic valve; a limiting overflow pipe is arranged in the balanced reaction chamber; a post-filter sampling opening of the balanced reaction chamber is connected with a post-filter sampling tube by virtue of a post-filter sampling electromagnetic valve; the controller is electrically connected with the liquid level control alarm, the water sample inlet electromagnetic valve, the water sample outlet electromagnetic valve and the post-filter sampling electromagnetic valve respectively. The device has the advantages of being reasonable in structure, true and reliable to sample, convenient to maintain, long in service life and the like.

The invention relates to a device and method for measuring the solid content of a solid-liquid system, and belongs to the technical field of process control in chemical production. The method comprises the following steps: quantitatively sampling a solid-liquid mixture to be detected in a container by a metering pump, injecting the sample into a measuring pipe provided with a jacket layer under the assistance of an electromagnetic valve, allowing the measuring pipe to stand still to carry out layering; making a signal generator and a signal receiver move along the measuring pipe at a constant speed, recording the power change of laser that penetrates the measuring pipe, determining the corresponding volumes of solid and liquid according to the power change, and finally calculating the solid content of the solid-liquid system. The device has the advantages of simple structure, reliable operation, convenient maintenance, direct measuring process, high reliability, and wide application range; can be used to measure the solid content under a normal pressure at a room temperature, and can also be applied to chemical process control and monitoring under a high pressure at a high temperature.

A sampling device for a molten metal to be poured into a casting mold according to an embodiment of the present invention is a sampling device that is mounted on an automatic pouring device that pours molten metal within a ladle into the casting mold and samples the molten metal within the ladle. The sampling device is provided with: a molten metal receiving vessel; a movable frame in which the molten metal receiving vessel is installed; and a drive unit that drives the movable frame and transports the molten metal receiving vessel to a molten metal receiving position for receiving the molten metal from the ladle.

The invention relates to a sterilizing and sampling integrated valve. The sterilizing and sampling integrated valve is characterized by being composed of a valve body and two valve cores, the valve body is composed of a valve cavity formed by multiple passages, a one-way tank discharging port, a two-way steam port and a three-way sampling port, the valve cores include a valve core A and a valve core B, the valve core A is a slide-valve-type main valve core, the valve core B is a sampling port valve core, and the valve core A is provided with three moving positions including a left position, a middle position and a right position. By the sterilizing and sampling integrated valve, control on the sterilizing and sampling process of a conventional bioreactor fermentation tank is simplified; various valves are integrated into a valve and can be controlled in a centralized manner.