Atago PAL-121S Potassium Hydroxide (KOH) Refractometer

Atago PAL-121S is a dedicated digital refractometer for measuring potassium hydroxide (KOH) aqueous solution concentration directly as percentage (W/W). With only 2-3 drops of sample, it delivers results within 3 seconds, enabling rapid quality control in the laboratory or production line.

The instrument offers a measurement range of 0.0-50.0% with 0.1% resolution and ±0.3% accuracy. These specifications ensure precise concentration adjustment in applications such as KOH-based liquid soap manufacturing, electrolyte preparation, alkaline cleaning solutions, and electronic component cleaning. The IP65 protection rating ensures reliable operation in high-moisture and high-dust production environments.

Powered by 2 x AAA alkaline batteries, the PAL-121S is cordless and portable, making it ideal for field and in-line measurements. Without temperature compensation, the most consistent results are achieved when measurements are conducted at a constant room temperature. With compact dimensions (5.5 x 3.1 x 10.9 cm) and 100 g weight, it is easily operated with a single hand.

Technical Specifications

Applications

• Concentration control in KOH-based liquid soap manufacturing
• Alkaline electrolyte preparation and quality control
• Electronic component cleaning solution monitoring
• Industrial alkaline cleaning solution production