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CN-224203028-U - Optical density measuring device

CN224203028UCN 224203028 UCN224203028 UCN 224203028UCN-224203028-U

Abstract

The utility model provides an optical density measuring device which comprises a host, a sleeve and a sleeve probe, wherein a light source and a detector are arranged at the bottom of a long rod-shaped host, a user instruction receiving device, a controller, a signal processor, an output device and a power supply module are arranged at the upper part of the long rod-shaped host, the sleeve is in a cylinder shape with an opening at the top and a closed bottom, the bottom is provided with a transparent part, the sleeve probe is in a short column shape, a detection bin is arranged at the center of the top, a reflecting mirror is arranged at the bottom of the detection bin, at least two sample inlet and outlet are arranged on the side face of the sleeve probe, the sample inlet and outlet are communicated with the detection bin through a flow guide channel, the host is detachably inserted into the sleeve, and the light source, the detector, the transparent part and the reflecting mirror are positioned on the same straight line in an assembled state. The optical density measuring device has accurate measurement, simple and convenient measurement process, can measure the OD value of the culture in real time, and is easy to use the device for measuring different samples.

Inventors

  • ZHOU PENG
  • XIE SI

Assignees

  • 伊达生物有限公司

Dates

Publication Date
20260505
Application Date
20250417

Claims (10)

  1. 1. The utility model provides an optical density measuring device, includes host computer, sleeve pipe probe, its characterized in that: The host is in a long rod shape, a light source and a detector are arranged at the bottom of the host, and a user instruction receiving device, a controller, a signal processor, an output device and a power supply module are arranged at the upper part of the host; The sleeve is in a cylinder shape with an opening at the top and a closed bottom, and the bottom of the sleeve is provided with a transparent part; The sleeve probe is short-column-shaped, a concave detection bin is arranged in the center of the top of the sleeve probe, a reflecting mirror is arranged at the bottom of the detection bin, at least two sample inlet and outlet ports are formed in the side face of the sleeve probe, and the sample inlet and outlet ports are communicated with the detection bin through a flow guide channel; The host is detachably inserted into the sleeve, and the sleeve probe is detachably or non-detachably arranged at the bottom of the sleeve; In the assembled state, the light source and the detector, the transparent portion, and the mirror are in the same line.
  2. 2. An optical density measurement device as claimed in claim 1 wherein the cannula and the cannula probe are disposable components.
  3. 3. An optical density measuring device according to claim 1, wherein a window is provided in the bottom of the host, the light source and the detector being mounted inside the window, the window being sealed by a transparent protective sheet.
  4. 4. The optical density measurement device of claim 1 wherein the bottom of the host further has a distance sensor.
  5. 5. The optical density measurement device of claim 1 wherein the light source and the detector are integrated on a spectral chip.
  6. 6. The optical density measurement device of claim 1 wherein the flow guide is curved in shape.
  7. 7. An optical density measuring device according to claim 1, wherein, the optical density measuring device further comprises an adapter, the adapter comprising an adapter ring and an adapter plug, The adapter ring is ring-shaped, the outer surface is provided with external threads, The adapter plug is provided with a plug cap part and a plug column part, the plug cap part is provided with an internal thread matched with the external thread of the adapter ring, the center of the top of the plug cap part is hollowed out and extends downwards to form a tubular plug column part, and the inner diameter of the plug column part is matched with the outer diameter of the host machine and/or the sleeve.
  8. 8. The optical density measuring device of claim 7 wherein the adapter ring has an opening in a side surface thereof extending axially therethrough, the opening having a recess on one side and a protrusion on an opposite side, the protrusion being insertable into the recess.
  9. 9. An optical density measuring device according to claim 7, wherein the outer surface of the plug portion is provided with a slip-resistant strip.
  10. 10. The optical density measuring device of claim 7, wherein the adapter plug is provided with an air hole or an air passage.

Description

Optical density measuring device Technical Field The utility model belongs to the field of measuring instruments, relates to a measuring instrument for biological experiments, and particularly relates to an optical density measuring device. Background When bacteria are cultured in a liquid medium, an Optical Density (OD) value of the bacterial liquid needs to be measured to evaluate the growth condition of the bacteria. From time to time, the experimenter usually takes a small amount of sample from the bacterial liquid in culture, and the OD value of the sample is measured by a conventional tabletop spectrophotometer. The operation process is tedious and time-consuming, increases the risk of pollution of the culture and the surrounding environment, and easily causes the experimenter to miss the optimal bacterial harvesting time in the rapid growth log phase of bacteria. An experimenter needs an instrument that can conveniently determine the OD of a culture in real time. The Chinese patent application CN110441237A provides a detection head of an immersion spectrophotometer, which can be directly placed in a water sample to be detected for real-time monitoring. The detection head is directly contacted with a water sample to be detected, and dirt stained on the detection head needs to be cleaned regularly when the detection head is used. However, the determination of the OD of a bacterial culture requires the prevention of cross-contamination between different samples, which places high demands on the cleanliness of the devices that directly contact the culture. Simple wiping does not allow sterility, and existing immersion spectrophotometers have difficulty in meeting the requirements for OD measurement of bacterial cultures due to the difficulty in sterilization. Disclosure of utility model Aiming at the problems in the prior art, the utility model provides an optical density measuring device which is used for helping a user to conveniently and rapidly finish the measurement of the OD value of a culture. In order to achieve the above purpose, the utility model provides an optical density measuring device, which comprises a host machine, a sleeve and a sleeve probe, The host is in a long rod shape, a light source and a detector are arranged at the bottom of the host, and a user instruction receiving device, a controller, a signal processor, an output device and a power supply module are arranged at the upper part of the host; The sleeve is in a cylinder shape with an opening at the top and a closed bottom, and the bottom of the sleeve is provided with a transparent part; The sleeve probe is short-column-shaped, a concave detection bin is arranged in the center of the top of the sleeve probe, a reflecting mirror is arranged at the bottom of the detection bin, at least two sample inlet and outlet ports are formed in the side face of the sleeve probe, and the sample inlet and outlet ports are communicated with the detection bin through a flow guide channel; The host is detachably inserted into the sleeve, and the sleeve probe is detachably or non-detachably arranged at the bottom of the sleeve; In the assembled state, the light source and the detector, the transparent portion, and the mirror are in the same line. In a further embodiment of the present utility model, the cannula and the cannula probe are disposable components. In the optical density measuring device provided by the further embodiment of the utility model, a window is arranged at the bottom of the host, the light source and the detector are arranged inside the window, and the window is sealed by a transparent protective sheet. In the optical density measuring device provided by the further embodiment of the utility model, the bottom of the host is also provided with a distance sensor. In a further embodiment of the utility model, an optical density measurement device is provided, wherein the light source and the detector are integrated on a spectroscopic chip. In the optical density measuring device provided by the further embodiment of the utility model, the flow guide channel is in a bent shape. In a further embodiment of the utility model, an optical density measuring device is provided, the optical density measuring device further comprising an adapter, the adapter comprising an adapter ring and an adapter plug, The adapter ring is ring-shaped, the outer surface is provided with external threads, The adapter plug is provided with a plug cap part and a plug column part, the plug cap part is provided with an internal thread matched with the external thread of the adapter ring, the center of the top of the plug cap part is hollowed out and extends downwards to form a tubular plug column part, and the inner diameter of the plug column part is matched with the outer diameter of the host machine and/or the sleeve. In the optical density measuring device provided by the further embodiment of the utility model, the side surface of the adapter ring is