Dustless Chalk / Nihon Rikagaku Industry co.,ltd.

Tsumiki / Nihon Rikagaku Industry co.,ltd.

Synthesis of CaO-SiO2 Compounds Using Materials Extracted from Industrial Wastes

Product Size: 0.5 x 3.0 inches (1.3 x 7.5 cm) Material: Chalk body: Calcim carbonate, scallop shell powder, Middle partition: PET Quantity: Dustless

日本理化学 Nihon Rikagaku Dustless Pro Chalk DCP-50-Y Yellow, 50 Pieces

Nihon Rikagaku Industry co.,ltd.

Materials tested in this study.

on 6 Colors DCC-72-6C 72 Units in Japan Physics and Chemistry Da Stress Choke (Japan Import) Dustless Chalk 72pcs, 6 Colors

Kitpas Dustless Art Chalk 6 Colours

Dustless chalk was introduced as an alternative to the traditional plaster chalk because of its

Nihon Rikagaku Industry Chalk Blue 72pcs DCC-72-BU

Synthesis of CaO-SiO2 Compounds Using Materials Extracted from Industrial Wastes