Radiation food and drug detector (photoluminescence method)

Chinese medicinal herbs usually contain or carry minerals (inorganic substances, silicates, etc.), which store energy through their structural voids when exposed to ionizing radiation (irradiation). When stimulated by excitation light, these stored energies will be released in the form of photons. The photoluminescence identification method is a method of identifying whether traditional Chinese medicine decoction pieces and solid preparations containing raw powder have been subjected to ionizing radiation (irradiation) based on the number of photons released.

PPSL-18Radiation food and drug detector (photoluminescence method)belong toLight stimulated luminescence (PSL) systemIt consists of a pulse excitation light source (infrared excitation light source), a sample chamber, a detection probe, a photon counting system, and a control unit. Specially used for identifying whether traditional Chinese medicine decoction pieces and solid preparations containing raw powder have undergone ionizing radiation (irradiation) at a dose of 1kGy or above.

PPSL-18Radiation food and drug detector (photoluminescence method)Based on the EU standard (EN13751) and in compliance with the "Guiding Principles for Photoluminescent Identification of Irradiated Traditional Chinese Medicine in the 2025 Pharmacopoeia", it can replace similar foreign products. In the past 10 years since its launch, it has been tested, verified, and recommended by many domestic drug testing institutions and has been widely used in food and drug testing institutes and enterprises.

Functional purposeHas it been used for traditional Chinese medicine decoction pieces, solid preparations containing raw medicinal powder, etcIdentification of ionizing radiation (irradiation) with a dose of 1kGy or above, as well as identification of irradiated products such as spices, fruits and vegetables, crustaceans, etc. containing shells or bone fragments.

Detection Principle：The method of using infrared pulse excitation light to stimulate luminescence is used to determine whether the sample has been irradiated by stimulating the release of residual energy during the irradiation process (referred to asPhotoluminescence identification methodorLight stimulated luminescence）.

Compliant with standards:Pharmacopoeia 2025 Edition9261《Guiding principles for photoluminescence detection of irradiated traditional Chinese medicine

How to translate

The European Union《EN13571: Detection of irradiated food using photoexcited light methodProduct Features

——Hardware：l

Standard light stimulated luminescence（PSL detection method (also known as photoluminescence method)l

Strictly benchmarking against the UKSURRC PPSL-2 irradiation detection instrument, directly applicable to EU EN13751 and pharmacopoeia evaluation threshold

lAt least ten years of long-life excitation light source, no need to consider frequent replacementl

High sensitivity photodetectors can detect as low as2% irradiation doping

lAutomatic power-off protection effectively prevents accidental exposure of the detector, ensures stable measurement, and extends the lifespan of the photomultiplier tube

lThe integrated drawer design with a limit mechanism ensures that the sample chamber remains light sealed during the sample retrieval and placement process

lThe user detachable bottom plate design facilitates the cleaning of powder residues in the sample roomldedicated

The aluminum alloy covered sample dish is both sturdy, durable, and resistant to organic solution cleaning, while also preventing the sample from being damagedLight bleachingProduct Features

——Software：

lAudit Tracking: User permission management combined with real-time operation records to ensure data integrity and traceabilitylMenu layout:

The standard layout of "Settings>Dark Count>Sample Testing>Data Viewing" conforms to daily testingprocess

lBackground check: Built in photomultiplier tube dark count rate indicator, over limit alarm, to avoid erroneous results

lOnline Help: Real time prompts following the menu greatly save learning time

lData saving: Automatic real-time data saving ensures that power outages will not cause data loss

lData display: Photon release curve is displayed synchronously with the count per second, clearly showing the energy release processl

Report generation:Two formats: Word and PDF; Single sample detailed report and multi sample batch report are optional

Technical Specifications——Hardware:l

Sample dish: covered Petri dish (diameter)50mm）， Aluminum alloy material, effectively avoiding light and preventing sample from "photobleaching".l

Blank sample dish count:PSL<700

lSample injection method: Manual sample drawer for quick pushing and pulling

lDrawer limit: The limit mechanism can limit the length of the drawer when taking and placing samples, ensuring that the sample chamber is fully sealed; Clean it when needed and take out the drawer for cleaning.

lAutomatic power-off: Once the drawer is opened, the detector automatically loses power to ensure accidental exposure of the photomultiplier tube.l

Excitation light source: infrared arrayIRLED， High frequency pulse stimulation, 360 ° sample full coveragel

Photon detection: High sensitivity photomultiplier tube（PMT integrates high-voltage power supply, without the need for users to adjust the voltage; Response range is 300-650nm.l

Dark count rate:（Typical value of 40/s at 20 ℃, maximum value of 150/slCounting range: maximum linear counting rate

20 millioncpsl

Pre filter: wavelength range300-650nm， Transmittance intensity ≥ 85%l

Collection frequency:1.0 times per secondl

Collection duration: default60 seconds, user adjustablel

Judgment threshold: default700/5000, user adjustablel

Detection sensitivity:0.1kGyl

Recognition accuracy:≥95%l

Negative reference substance: The material is chili powder,PSL value<700 (2g)l

Positive reference substance: The material is chili powder,PSL value>5000 (2g)l

Power supply demand:220VAC±10%/50Hz

lWorking environment: ordinary laboratory (low light environment)l

Ambient temperature5～40 ℃l

ambient humidity:10～90% RHl

Computer requirements:4GB or more memory, 200GB or more hard drive, at least one free USB port, WIN10/11 operating systemlCommunication method: StandardUSB interface, maximum

communication rate480Mbps

Technical Specifications——Software:

lUser management: including password login, user registration, password modification, hierarchical permission setting, and role assignment.lAudit Tracking: Real timeComplete capture of all elements of the operation，includingOperating subject information, operating content, andNon modifiable timestamp，ensure

Data integrity and traceability.

lLog management: Real time recorded audit trails are automatically saved and backed up in log files to prevent data loss. Provide the function of exporting and importing logs. Capable of real-time monitoring of log file size.l

Device Communication: StandardUSB port, the software automatically searches for communication ports and records the last port used.

lDark count check: Built in photomultiplier tube dark count indicator, with over limit alarm and abnormal alarm functions.

lSample testing: product name and batch number reminder confirmation; The collection time and evaluation threshold can be set by users and controlled by permissions; Real time display of counts per second; Automatic real-time storage of measurement process data without loss; Synchronize the display of tables and spectra; Photon release curve provides assistance in determining difficult samples; Single sample detail report and batch sample report are optional; Sample data anti deletion function.

lData Review: Batch data import review, fully reproducing all information and data of the sample.l