A simple and effective device for safely opening glass ampoules. The plastic case completely encloses the glass ampoule (with the dot on the amp facing out), holding it in place so that it can be broken with a simple 'snap'. The snapper can then be easily opened and the ampoule can be removed, or it can be locked in the open position (by means of a clip on the back) and contents of the ampoule can be drawn up in situ. When using ampoules that have been scored to make opening easier, you must place the ampoule in the snapper correctly, otherwise the amp may shatter inside the device. ALWAYS HAVE THE BLUE DOT FACING OUT. Originally designed for use by injecting drug users (to reduce the risk of blood borne virus transmission when opening water ampoules) the Safe Snap was quickly adopted by health workers. Every nurse, doctor and community pharmacist should have one in their pocket! The main practice issue for use of the Safe Snap is to ensure that the blue dot on the neck of the ampoule is facing outwards. When using ampoules that have been scored to make opening easier, you must place the ampoule in the snapper correctly, otherwise the amp may shatter inside the device. 10ml ampoules The Safe Snap will also break 10ml ampoules: simply place the top of the ampoule in the 'body' part of the snapper, hold the bottom half of the ampoule in your hand, and break. The cold plastic is more brittle when cold, and if your snapper gets cold, it may cause the hinges to snap. So, if you are working outside during the winter it makes sense to keep your safe snap in a pocket where it can be kept warm, it's then less likely to break. The Safe Snap Amp Snapper is precision engineered for durability and ease of use. The hinges should last at least 100 uses.