About KHT Instrument: Heat Seal Testing Equipment Manufacturer
KHT Instrument (山东恺程合创新材料有限公司) has designed and manufactured precision heat seal testers for packaging laboratories worldwide since 1999. Our STH series — manual, gradient, and touchscreen models — are trusted by pharmaceutical, food, film, and battery packaging labs across North America, Europe, and Asia.
1999
Founded
25+
Years manufacturing
500+
Labs served worldwide
40+
Countries
Who We Are: 25+ Years in Packaging Integrity Testing
KHT Instrument was founded in Shandong, China, in 1999. We focus exclusively on packaging integrity testing instruments — heat seal testers, seal inspection equipment, and related lab instruments for flexible packaging quality control. This focused specialization means our engineering team understands heat seal testing at a depth that general instrumentation manufacturers cannot match. Over 25 years, we have shipped more than 500 instruments to labs in food, pharmaceutical, film manufacturing, and battery sectors across 40+ countries.
Our Manufacturing Standards and ASTM Compliance Commitment
All KHT Instrument products are manufactured under ISO 9001 quality management processes. Our heat seal testers are designed and validated to comply with ASTM F88 and F2029 equipment requirements — temperature uniformity ±0.5°C (exceeding the ±1°C F2029 requirement), calibrated jaw force, and documented traceability. Every unit ships with a calibration certificate traceable to national standards. Annual recalibration services are available to maintain compliance throughout the instrument's service life.
The KHT STH Product Line: From Manual to IoT-Ready
The KHT STH series covers three instrument levels: STH-3 (manual, entry-level ASTM F88/F2029), STH-3A (digital 5-position gradient — our flagship model used by film R&D and pharmaceutical QC labs worldwide), and STH-5 (touchscreen IoT-ready with programmable profiles and data logging, designed for production pharmaceutical and battery labs). All three models share the same core thermal and mechanical design validated for ASTM F88/F2029 compliance.
Global Reach: Markets Served and Language Support
KHT Instrument serves laboratories in North America, Europe, Russia/CIS, Southeast Asia, and Latin America. Technical documentation, calibration support, and customer service are available in English, Chinese, and Russian. Our European customers operate under CE-compatible instrument designs; our North American customers receive instruments with dual-voltage supply and ASTM-standard documentation. Lead time from order to delivery: typically 3–6 weeks ex-factory.
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