AmScope - 72 Pieces of Pre-Cleaned Blank Microscope Slides + 100 Coverslips - BS-72P-S100-22X5 - Multi-Pack (5 Count)

Ordered this, and to my surprise they had this pretty green frosted edge :)About 1 slide per box will be chipped, but it does not really matter (at least not for me)

The slides are near perfect. Clean. Separated by nicely cut tissue paper. For the most part there is no prep or pre-cleaning of the slide needed prior to use. The slide edges are nicely ground, so there are no sharp glass edges - ever.The cover slides are a different matter. The cover slides are packaged in a stack, contained in a fairly durable two piece cubical plastic container. You can open and close the container repeatedly; it's durable. Inside of the container the 'stack' of cover slides are wrapped in tissue paper. The shipping paper does seem to protect the cover slides from any chipping or breakage during shipping and handling. Now for the less-good news (and reason for only 3 stars instead of 5 stars):The way they must be manufacturing the cover slides, after they cut and stack them, individual cover slides tend to STICK-TOGETHER. Trying to pry them apart is difficult. Liquid between them? Tapping on a solid surface at an angle? Applying shear force to break them apart? All can be difficult. If you do not inspect each cover slide carefully, you may wind up using two or three mounted onto a slide, making for a VERY THICK cover set to look through. Use with 100x oil immersion will be a disaster then (or simply fail). If / when you do succeed at separating each cover slide (and hopefully verifying it is only one slide), then there is the dirt./ cleanliness issue.Pretty much 100% of the slides are dirty - visibly so. For purposes here 100% of the cover slides must be cleaned. Alcohol cleaning works partially. At some point in the manufacturing process there must be some type of film that is deposited on the cover slide surface. It must be only partially soluble in 70 Isopropyl alcohol. Regular Windex seems to be substantially more effective applied and then the surfaces (both sides) rubbed with liquid Windex soaking each slide. Then manually wipe/drying each one. Yes - time consuming. But if you want/need a truly clean cover slide for good imaging result - clean these slide covers. Tolerances on the cover slides are 'ok', usually falling just within the range printed on the box. We've run into a few that were way too thick, out-of-spec, making 100x oil immersion impossible.From the last 2000 cover slides purchased (and slides too), we've had very low breakage - less than 0.5%. We will continue to purchase these slides, albeit the cover slide cleaning is a time consuming pain, beyond that they are good.The manufacturer would have a great product if they could correct the cover slide (slime, dirt, emulsion, oil, whatever) contamination on the cover slides. Good process engineering, industrial engineering and quality control efforts would probably accomplish that quite easily.I hope this helps other users and buyers.

Good price for the 5 pack. Slide packaging was somewhat dirty (on the outside) but the slides were okay. Slides themselves are fairly clean, some dried cleaning agent is visible at higher magnification - but this is pretty common for microscope slides. The slides are separated from each other by paper, this paper does not seem to contaminate the slides. Will buy again.

Using these for windows in an architectural model. Bet you never saw that before. I'll need around 2 thousand by the time I'm done.

Ordered 3 times this past week after buying these for years....all 3 times they were wrong, sent back. NOT clear blank (photo attached). Emailed company but not hearing back from them about it. Big bummer. If you need clear blank DO NOT buy these.

Some slides are too long to fit in my regular slide box. The quality is not consistent...

Clean, non streaky good quality