Invitrogen™ Countess™ 3 Automated Cell Counter by Thermo Fisher Scientific

"Great product and it makes your life easier when is time to count cells. Fast and reliable."

"It works great for us. We use it to count cells for calculations of plate seeding, flow cytometry and xenograft cell implants. "

"Cell counter makes cell count so much easier and it shows the percentage and amount of dead cells versus viable cells which is great. The sales reps were amazing and so helpful, allowing us to try the cell counter for almost a month before purchasing. "

"Accurate, convenient, fast."

"A compact cell counter for easy cell count of mammalian cells. This is handy in your cell culture lab. The machine provides nearly accurate estimates of total cell count, viable cell count/ dead cell count and percentage viability of your sample. The cells after trypsinization can be loaded (10ul) on a Countess slide after mixing with the trypan blue dye provided. The machine distinguishes the viable and dead cells based on the dye exclusion. It is easy to use, does not require too much maintenance and works relatively trouble free."

"East to use, durable, accurate & moderately priced."

"The equipment is really handy and easy to use. It performs the task of counting live as well as dead cells in a fraction of a few seconds. It also provides images of the cells counted. Data can be stored on machine or transferred to a computer."

"Countess II is very easy to use and it's a small machine for the bench top. It's as simple as adding a 1:1 ratio of typhon blue (5ul) and your sample (5ul). You mix and pipet onto the plastic slide, wait 30 sec, then insert the plastic slide into the machine. You get the result of adjusted concentration and viability % of the live and/or dead cell of the sample. However, the limitation is that the cell size has to be in certain range. If it's too small, the readings won't be accurate. Also, it won't be accurate if it contains more than one type of cell."

"This has made our life in a massive teaching lab so much easier. Not having to manually count cells using a haemocytometer several times a week makes having this worth the money. The task that took us a several minutes to do now takes merely a few seconds. The instrument is very easy to use and quite small as well so doesn't take up much space."