Type IV Dental Stone A superior, extra-high compressive strength dental stone, specifically designed for dies, denture models, opposing models and crown and bridge (C&B) bases. Ideal for applications that require controlled expansion, detailed reproduction, consistency and high chip resistance. Typical Material Properties* Type: IV Color: Golden brown Water/Powder Ratio: 19/100 Set Time: 10 - 13 minutes Set Expansion: ≤ 0.13% Compressive Strength (at 1 hour): 8,000 psi Ultimate Compressive Strength: 19,500 psi *These results are based on the testing methods, frequency and procedures of Ransom & Randolph or its approved suppliers. The levels referenced herein are only for general guidance and do not constitute a firm specification. Non-Latex Shelf Life: 730 days Country of Origin: USA Application Instructions Manual Mixing 1. Add 100 g of powder to 19 ml of water. 2. Allow powder to soak in water for 20 seconds. 3. Hand spatulate at 120 rpm for 60 seconds. Mechanical Mixing 1. Add 100 g of powder to 19 ml of water. 2. Allow powder to soak in water for 20 seconds. 3. Mechanically mix for 20 to 30 seconds at 400 rpm.