Inventory management made easy with in stock and ready-to-ship chemicals for all your research and analysis needs.

• The GFS Express Program helps you stretch your budget with the most reliable results -- every time.
• Guaranteed stock ships in two days or the freight is on us! Quantity limitation may apply.
• 2-day shipping starts the same day or the next upon order confirmation approval.

The 500 mL kit contains 2 x 500 mL of each pH 4 red, pH 7 yellow, and pH 10 blue. The 4 L kit contains 1 x 4 L of each of the above items.