bserbiak

the temperature was approximately 40 F and the organism is ~.25mm in size. Merged post follows: Consecutive posts mergedThe algae skeleton seems like a good bet.

Hello all, while climbing Mt. Washington in New Hampshire, my hiking party came across a stream coming from melting snow. I collected some of the water and later examined a sample under a microscope. Among a host of other microbes and giardia contamination, I found several star shaped microbes in the water. I cannot identify these microbes nor find any literature describing them. Anyone have an idea of what we're looking at here? Picture taken at 60x magnification Any help would be appreciated. Thanks.

Checked the UV absorption of the glass- all set with that. Unfortunately, it needs to be near perfect uniformity. The last time this type of research was presented at the regional conferences, the issue of consistent application of the sunscreen was brought up again and again; the research was torn to bits over that. A realistic application (rubbing with cotton or not) would only work if it was guaranteed to provide uniformity.

Thanks for the input. @inow- I think the idea of some type of diffuser could work...just not a human driven spray bottle...there's too much space for error and inconsistency there. The glass as a surface shouldn't be a problem in itself- I like it personally because it reflects very little light by itself. Thank you for your contribution though @Klaynos- awesome idea...I'll be looking into this...unfortunately I may not have the resources to accomplish this in the labs here (Certainly will seek this out though). And as far as your comment about the use of filters rather than a OTC sunscreen goes; I'm testing the efficacy of a specific set of sunscreen agents, that need to remain in product form. But god do I wish that filters could be used here to make this all so much easier. Thank you for the help

Hey all, need some help. I'm running an experiment exposing Vicia Faba (beans) to UVA and UVB light, observing chromosome breaks, and repeating the process with sunscreen added. I need to find a way to introduce the sunscreen somewhere in between the path of the light and the plants (whether this involves application to the leaves, some sort of glass plate or other) whatever the solution entails, the following must be true: 1)The sunscreen must be uniformly administered to all plants at once (ie: no gradients in distribution, no "by hand" application, etc...) Any ideas? I've already attempted to press the sunscreen between two glass plates to spread it uniformly, but this doesn't work because of the viscosity of the sunscreen. Optimally, I would like to be able to use the sunscreen agent on glass, but need a fix for this problem. Thanks to anyone willing to read that and reply