Insulin syringes may vary in the amount of space between the bottom line and the needle (dead space), so if you are mixing two types of insulin be sure to discuss any change in the model and brand of syringe you are using with your health care provider. Novolin R can be mixed with NPH insulin right before use. When you are mixing Novolin R insulin with NPH insulin, always draw the Novolin R (clear) insulin into the syringe first. Add together the doses (total number of units) of NPH and Novolin R that you need to inject.
Twitter's privacy policy states that you should be 13 years old to have an account. + 494 others found this useful.
Many fewer than Twitter would lead you to believe. According to its about page, Twitter has 175 million registered users. But registered users is a funny term. What it really means is the number of accounts. So, according to Twitter, 175 million Twitter accounts have been opened during Twitter's history. That's nice to know, but it doesn't really answer our question, does it? Fleshed-out a bit, our question is: How many individuals are active users of Twitter? Facebook has a simple answer to this question. It says 600 million people visit Facebook each month, and that half come back every day.