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When you need reliable printing and adhesion testing solutions, Lotar LLC delivers the products and knowledge to help your materials meet strict quality standards. As the original manufacturer of test inks and test pens, we provide accurate testing tools backed by nearly four decades of industry experience. Our solutions help you verify surface treatments across various materials and applications. Reach out to us to discuss your testing requirements.

Manufacturing operations across North America and Mexico depend on accurate adhesion testing to maintain product quality and prevent costly failures. When you work with plastics, metals, or treated surfaces, proper adhesion verification ensures inks, coatings, and adhesives bond correctly. Testing helps you identify surface contamination issues before they impact production.

• Quality control for printing operations
• Pre-treatment verification for coating applications
• Surface energy measurement for bonding processes
• Contamination detection on treated materials
• Production line testing protocols

Regular testing protects your investment in materials and reduces waste from adhesion failures. Our testing products deliver consistent, repeatable results you can trust.

Since 1989, Lotar has been the trusted source for printing and adhesion testing products. As a family- and woman-owned business, we combine decades of specialized knowledge with personalized service. Our commitment to quality means every product meets rigorous standards, and we back our test pens and inks with shelf-life guarantees.

• Original manufacturer with 38 years of experience
• Six-month guaranteed shelf life on pens and inks
• Fast turnaround with quotes within three business days
• Consistent product quality you can depend on
• Direct support from knowledgeable staff

We understand the critical role testing plays in your quality assurance program. Our products and services help you maintain the standards your customers expect.

Ready to improve your adhesion testing protocols? Lotar provides the testing solutions and support you need to maintain quality standards. Serving North America and Mexico with reliable products and responsive service, we make it easy to get started with the right testing tools for your application.

Contact us today for your free quote and discover why manufacturers trust our testing products.