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Quality Control

Quality You Can Rely On

Quality is built into the design of Keystone’s products. Raw materials are carefully selected, and formulations are vigorously tested for functionality and stability, prior to being commercially manufactured. Once production begins, the Keystone Quality Control team uses advanced knowledge of product chemistries, production processes, and testing methodologies to ensure that every outgoing batch meets our customers’ high-quality standards. Our comprehensive quality process combines analytical, physical property, and functional testing. Each batch is tested at several key points throughout the manufacturing process to verify product consistency and performance.

Quality Process

  • Quality Inspection (QI)
  • Quality Control (QC)
  • Quality Assurance (QA)

Quality Testing

  • Chemical Analysis
  • Physical Property Testing
  • Functional Testing

Analytical. Physical. Functional.

Comprehensive Testing

Keystone Industries combines analytical, physical property, and functional testing. Each batch is tested at several key points throughout the manufacturing process to verify product consistency and performance. Every outgoing batch at Keystone Industries is guaranteed to meet our customer’s highest expectations for quality.

Step 1.

Chemical Analysis

  • High-Performance Liquid Chromatography (HPLC)
  • Gel Permeation Chromatography (GPC)
  • Infrared Spectroscopy (FTIR)
  • Gas Chromatography (GC-FID and MS)
  • UV-VIS Spectroscopy
  • pH Meters

Step 2.

Physical Property Testing

  • Color: Spectrophotometer and Visual Assessment
  • Particle Size Analysis: Laser Light Diffraction of Wet and Dry Samples
  • Viscosity and Thickness: Rotary and Cone and Plate Viscometers
  • Film Characteristics: Gloss, Hardness, and Thickness
  • Volatile Content
  • Density
  • Optical Clarity and Haze
  • Thermal and UV Stability

Step 3.

Functional Testing

  • Application and Workability
  • Feel and Odor
  • Settings and Cure Time