Laboratory Powder Dispensers
Our solid dispensers assist to avoid tedious and time-consuming manual dispensing of powders. These laboratory dispensers allow the repeated dosing of precise amounts of substances fast, accurately and safe.
Our Products Features
Manual solids dispensing can be laborious as it requires to check and double check the amount on the scale to be dispensed. The solid dispenser (SDH/B/M-1) offers consistent and accurate dosing, time after time.
The auto power dispenser is able to handle a wide range of solids and microspheres. XQ Instruments offers testing and calibration with the target powders before shipping the device to the customer.
3. Ease of Operation
The user only needs to fasten the glass vials onto the solids dispenser, select the value and then press the trigger button. Whether a handheld dispenser and battery operated or bench-top, the powder dispensing equipment is mobile and can be used in different context and location.
Methods & Applications
All the dispensers here at XQ Instruments are volumetric powder dispensers. What this means is that they dispense fine, uniform solids or powders by their volume rather than weight. This is measured by the bulk density which is the weight of the sitting solids for a given volume. Do note that this sitting solids (for example, pour a certain volume of the fine solids into a breaker but do not shake) in a given volume differs significantly from the density of the solids alone.
The volumetric dispenser operates in an open loop where a certain amount of powder is filled into a fixed chamber and then dispensed at the next subsequent step of the process. This is then repeated with each fixed dose (volume) being accurately dispensed. The dispenser would therefore need to be calibrated for this fixed dose prior to shipping. The advantage of volumetric dispensing is the speed of dispensing. The disadvantage being the consistency of each dose as there is no feedback on the actual weight or volume of the dispensed dose. XQ Instruments has an automated weighing scale accessory to provide feedback of actual measurements for each dose, the amount (weight) dispensed in each cycle. In such a setup, the user can choose to discard dispensed samples that are outside the accepted weight range.
Microspheres usually take the form of glass beads and they are dispensed into a variety of mediums for specific applications. These glass beads exhibit high mechanical strength, chemical stability and limited thermal expansion. They flow freely which is a good quality for accurate, repeated dispensing by XQ Instruments dispensers. As glass beads are resistant to moisture, they remain consistent in their volume density and do not stick together forming clumps. They are one of the most commonly used solids in our dispensers and sizes vary from the nanometres to millimetres range.