The viscosity of a fluid is basically a measure of how sticky it is. Water has a fairly low viscosity; things like shampoo or syrup have higher viscosities. Viscosity also depends on temperature: engine oil, for instance, is much less viscous at high temperatures than it is in a cold engine in the middle of winter.
One small packet of 7 grams will produce about 500 grams of beads once they are hydrated. Soak overnight to a ratio of one packet of beads to 50 parts water. You can add more water or pour out any extra water when the beads expand. They can also be used to water potted/garden plants and flowers.
Miyuki Delica beads are high quality glass beads made in Japan. These are perfect for projects where you need the exact size beads throughout your design. We stock a large range of colours in 5g bags. The beads are a cylinder shape and have a 0.8mm hole. A 5g bag of size 11 beads contains approx 1000 beads.