Frequency Conversion Tunning Fork environmental protection and for the

environmental protection and for the determination of water quality

Pack of 50: This set includes 50 high-quality centrifuge tubes

Sturdy and durable

Variety of Rocks: From the bituminous texture of Coal to the intricate patterns of Marble

Included: Lab-Aids 9 Level Conductivity Meter Kit

Frequency Conversion Tunning Fork environmental protection and for the7 Frequency Available C 128Hz D 144Hz E 160Hz F170. 7Hz G 192Hz A 213. 3Hz B 240Hz. Including Wooden Resonator and Hammer. Premium Quality: Tuning Fork Electric is made of high grade construction all the way through, excellent build quality and proven reliability across the range. Designed for use in professional laboratories but is an ideal choice for science classrooms and household use. If you need custom order with different sizes design, please