Standard substances for the calibration of viscometers

Introduction 59 II. Sucrose solutions 61 1 Purification of sucrose . . . . 61 2 Preparation of solutions 62 III. Measurement of viscosity 64 1. The viscometer 64 2. Viscosity formula 64 3. Calculation of constants in formula 65 4. Calculation of the pressure 65 5. Details in regard to instrument and measurements 69 IV. The Centipoise 72 V. Viscosity and fluidity of water 73 VI. Viscosity and fluidity of ethyl alcohol-water mixtures 76 VII. Viscosity of sucrose solutions 77 VIII. Summary 85 Appendixes 86 Appendix A. -Density in grams per milliliter of mixtures of ethyl alcohol and water 86 Appendix B. -Density in grams per milliliter of sucrose solutions 86 Bulletin of the Bureau of Standards Voi.14