Vertical Counter‑Pressure Retort LS‑35L/50L/75L/100L | Dual‑Mode Sterilization for Food Packaging Aseptic Testing LS‑series Vertical Counter‑Pressure Retort for Food Packaging Sterilization & Laboratory Aseptic Validation Product Introduction Reliable dual‑mode counter‑pressure sterilizer tailored for food packaging quality control & lab aseptic evaluation. The vertical counter‑pressure retort is a medium‑small‑size mechanically program‑controlled counter‑pressure sterilization equipment. The sterilizer adopts electric heating mode. Water is directly injected into the sterilizing chamber and heated to generate high‑pressure steam required for sterilization to disinfect articles. After sterilization is completed, external compressed air and water pressure are applied for rapid cooling within 3 minutes, cooling internal articles down to 30‑40℃. Equipped with program control, it supports two operation modes: boiling disinfection and pressure sterilization with rapid cooling. Boiling temperature can be set ≤100℃. The rapid‑cooling pressure sterilization temperature is pre‑selectable within 101℃‑135℃. It is integrated with heater overload protection and buzzer alarm upon sterilization completion. Featuring simple operation and high safety reliability. This unit is suitable for disinfection and sterilization of food packaging, utensils and instruments. It is an ideal device especially for aseptic tests in food research institutions. Working Principle Dual‑sterilization logic enables boiling disinfection & high‑pressure counter‑pressure sterilization, simulating real‑world thermal processing conditions for flexible packaging samples. This equipment is designed with two disinfection & sterilization principles to deliver dual‑function performance for customers. The heater directly heats water to produce pressurized steam. The pressurized steam acts on microorganisms on samples and destroys their structures to realize sterilization. When rapid‑cooling sterilization program starts, 6 liters of tap water is first injected into the chamber. After around 25‑minute heating process, it enters sterilization holding stage with sterilization duration of 35‑40 minutes. When sterilization finishes, 0.24 MPa compressed air and tap‑water pressure are manually fed into the chamber, then half‑open the drain valve to discharge water and implement counter‑pressure cooling for flexible packages and other specimens. Rapid cooling lasts for 3 minutes. Manually cut‑off compressed air and tap‑water supply, and internal articles can be cooled down to 30‑40℃. Core Advantages Dual‑mode operation: boiling disinfection & counter‑pressure pressure sterilization Ultra‑fast 3‑minute counter‑pressure cooling to avoid flexible pouch deformation Heater overload protection & buzzer alarm when sterilization cycle completes Multiple chamber volume options:35L‑50L‑75L‑100L for different test throughput Mechanical program control, easy operation for laboratory staff Technical Parameters Item Specifications Max Working Pressure 0.22 MPa (30 Psi) Max Working Temperature 135℃ Sterilization Temperature Selection 101‑135℃ Boiling Temperature Selection ≤100℃ Timer Range 1‑60 min Effective Chamber Volume 35L, 50L, 75L, 100L Power / Power Supply 2.5 KW / AC220V, 50Hz; 3 KW / AC220V, 50Hz; 4.5 KW / AC220V, 50Hz Overall Dimension 570×550×970 mm(35L);590×590×1110 mm(50L);650×630×1150 mm(75L);680×650×1220 mm(100L) Gross / Net Weight 56/42 kg(35L); 68/50 kg(50L); 90/70 kg(75L); 105/85 kg(100L) Application Scenarios Widely adopted in food R&D laboratories, packaging manufacturers and quality inspection institutes for sterilization and thermal‑resistance assessment of flexible food packaging materials. Disinfection & sterilization for food flexible packaging, containers and lab utensils Aseptic test and thermal resistance evaluation for food packaging samples Sterilization for laboratory instruments and small‑batch food test specimens Get Custom Solution & Quotation GBPI Packaging Test EquipmentOfficial Website: www.gbpitester.com

Based on the accumulation of research and development and manufacturing technologies of mass spectrometers, Guangzhou Biaoji Packaging Equipment Co., Ltd. has been tackling key problems for six years，through painstaking efforts, ingenuity and continuous upgrading and iteration, it solemnly launched the second generation triple quadrupole GBLC-TQ 1000. The product integrates a number of core patented technologies such as high-efficiency anti-fouling ion source, multi-stage ion guidance technology, high-precision mass analyzer, linear acceleration collision cell, and high-voltage radio frequency power supply. Compare with that first generation product, the invention has the advantages of high transmission efficiency, better sensitivity, faster scanning speed, bet stability and overall performance improvement, and is suitable for sample detection and scientific research in various fields such as public security, food, clinic, medicine, environmental protection and the like. GBLC-TQ 1000 will be your laboratory's indispensable assistant, help you easily cope with any challenge, achieve unimaginable achievements.

The Compression Tester GBN200A is professionally used to test the pressure resistance and burst resistance of various packaging bags. It can set the pressure and measure the deformation; set the deformation and measure the pressure resistance. It is an ideal testing equipment for quality inspection, drug inspection, scientific research, packaging, film, food, medicine, daily chemical and other industries.

Application Use for test the light transmittance and haze degree of all transparent and semi-transparent parallel plane samples (plastic plate, sheets etc), and turbidity or clarity of liquid samples (water, drinks etc), used in the industries of plastics, membrane, coatings and paints, printing ink, research institute and so on.

GBD-L2 falling dart impact tester is suitable for testing materials such as plastic film or sheet and steel plate coating with a thickness of less than 1mm. Under a given height of free falling dart impact, it can measure the energy (in Quality to express results) of plastic films,thin section specimens and other materials. Through the impact resistance test, it can prevent the packaging surface from being damaged when the packaging material is impacted or dropped due to insufficient toughness of the packaging material, and effectively avoid the product from being damaged due to impact or falling in the circulation link. It can be used in scientific research, teaching, industrial and mining enterprises, laboratories, research institutes and quality supervision departments.

GC9802-K Face Mask Ethylene Oxide (EO) Residuals Testing Gas Chromatography has a reasonable structure, stable and reliable performance, simple operation and convenient maintenance. Can be widely used in petroleum, chemical industry, pesticides, medicine and health, commodity inspection, environmental protection, universities and other production and scientific research departments. It can be used to detect ethylene oxide and other organic solvents. Detects purity or content of a single solvent

Heat Seal Tester apply to test the temperature, pressure, time and strength for heat sealing of various plastic films, composite film, aluminum foil and so on, widely used in industries of , food, pharmaceuticals, inspection agency, research institute and so on.

GBDA-120 Compost Degradation Tester is designed in full compliance with standards such as ISO14855-1 and ASTM D5338. The mass of carbon dioxide released during biodegradation can be detected automatically, and the biodegradation percentage of degradable materials can be determined.  

GBD-S Tear Tester test the tear resistance of paper, film, non-woven fabrics and so on.

Used for face mask air flow resistance and differential pressure testing to check breathability and can also be used to check differential pressure of textile materials gas exchanger.

  GBPI Optical Testing Equipment Haze Meter BJ‑830 Universal Type Looking for technical specs, quotation or application guidance? Get complimentary support from our professional testing instrument specialists. Click for Free Consultation Introduction BJ‑830 haze meter (universal type) can easily implement ASTM D1003 non‑compensation method, ISO 13468 compensation method, full transmittance, haze test, and the open sample chamber can be used for vertical or horizontal testing to adapt to more samples being tested. BJ‑830 haze meter adopts PD array detector, which meets CIE V(λ) 2 degree visual response. The compensation method measurement can achieve high‑precision and repeatable light transmittance and haze data measurement. Application The BJ‑830 haze meter is widely used in fields such as glass processing, plastics processing, thin‑film production, display screen manufacturing, the packaging industry, and the analysis of liquid pharmaceutical solutions. Technical Advantages Compatible with both ASTM and ISO testing standards. Compliant with testing standards including GB/T 2410, ASTM D1003/1044, and ISO 13468/14782; includes a third‑party calibration/verification report. No warm‑up required—ready for immediate use, with results available in just 1.5 seconds. Supports haze and total luminous transmittance measurements under CIE‑A, CIE‑C, and CIE‑D65 standard illuminants. 21mm measurement aperture. Features an open measurement area, accommodating samples of any size. Supports both vertical and horizontal measurement orientations, suitable for samples such as sheets, films, and liquids. Equipped with an LED light source, offering a long service life—no replacement needed for ten years. Technical Specifications Item Parameter Details Model BJ‑830 Features Enables ASTM‑standard haze measurement (ASTM D1003/D1044) and transmittance measurement. Its open measurement area supports both vertical and horizontal testing. It is widely used for transmittance and haze testing in glass processing, plastics processing, film, display manufacturing, and packaging. Light Source CIE‑A,CIE‑C,CIE‑D65 Standards ASTM D1003/D1044,ISO13468/ISO14782,JIS K 7105,JIS K 7361,JIS K 7136,GB/T 2410‑08 Measurement Parameters Haze (HAZE) and transmittance (T) in accordance with ASTM standards Measurement Aperture 21mm Display 5‑inch TFT LCD Repeatability 0.08 Optical Geometry 0/D Measurement Range 0‑100% Resolution 0.01% Sample Size Thickness ≤ 145 mm Data Storage 20,000 data values Interface USB Power Supply DC12V/3V Operating Temperature 5–40°C; relative humidity 80% or lower (at 35°C), non‑condensing Storage Temperature ‑20–45°C; relative humidity 80% or lower (at 35°C), non‑condensing Dimensions L × W × H: 310 × 215 × 540 mm Weight 6kg Standard Accessories PC software (Haze QC) Optional Accessories Measurement fixtures, haze reference standards, and custom aperture plates About GBPI GBPI (Guangzhou Biaoji Packaging Equipment Co., Ltd.) was founded in 2002 in Guangzhou Economic and Technological Development Zone. It is a comprehensive high‑tech enterprise integrating R&D, manufacturing and sales of packaging & optical testing instruments. We deliver complete testing solutions for packaging, food, pharmaceutical, new‑material and laboratory industries. GBPI owns CNAS‑authorized testing laboratory and reference‑material development center, supplying instrument hardware, third‑party sample testing and calibration services for global clients. Interested in BJ‑830 Haze Meter for your laboratory? Reach out to GBPI for datasheet, quotation and professional technical support. Click for Free Consultation

Didital thickness tester is used to make thickness measuring or comparative measuring of plastic film, thin sheet, paper and so on.