Forensics C

[AMAZHANG]

This is a little off topic from the discussion above, but does anyone know where invites get the samples they use in the plastics/polymers section? Like specifically the pellets/beads? We've been trying to look for them for forever lol

I know Ward's Science sells kits specifically for Science Olympiad. Here's the link for Forensics: https://wardsci.com/store/catalog/produ ... 470231-372 It says it includes the polymers in the description. Hope that helps!

[shrewdPanther46]

Those kits are ripoff for the price, just throwing it out there

[pikachu4919]

This is a little off topic from the discussion above, but does anyone know where invites get the samples they use in the plastics/polymers section? Like specifically the pellets/beads? We've been trying to look for them for forever lol

I know Ward's Science sells kits specifically for Science Olympiad. Here's the link for Forensics: https://wardsci.com/store/catalog/produ ... 470231-372 It says it includes the polymers in the description. Hope that helps!

The ones in the Ward's Science kits are 2" x 2" cubes tho, not the tiny pellets that you usually see.

Lol Ward's products are kinda overpriced and overrated imo...

[AMAZHANG]

This is a little off topic from the discussion above, but does anyone know where invites get the samples they use in the plastics/polymers section? Like specifically the pellets/beads? We've been trying to look for them for forever lol

I know Ward's Science sells kits specifically for Science Olympiad. Here's the link for Forensics: https://wardsci.com/store/catalog/produ ... 470231-372 It says it includes the polymers in the description. Hope that helps!

The ones in the Ward's Science kits are 2" x 2" cubes tho, not the tiny pellets that you usually see.

Lol Ward's products are kinda overpriced and overrated imo...

Haha I agree about the price, oh I wasn't sure if it was cubes or whatnot. I know my junior high always had the pellets that you would see in competition but I don't know where they're from rip

[d4dd7y00n]

For seeds and pollen, where do I find information about seeds/pollen from different country regions? They asked a question about this in one of the past invitationals, but I was not able to find information on this anywhere

[megan_scioly]

Where is a good place to start with soil identification? What kind of soil are possibilities?

[Tailsfan101]

Where is a good place to start with soil identification? What kind of soil are possibilities?

I don't know if this is the same for Forensics, but in Crime Busters we have four soils to identify: sand, loam, silt, and clay. In Forensics they might add peat, but I'm not the expert here.

[Stefannli]

Do invitational competitions like Princeton require competitors to identify real hairs under a microscope?

[pikachu4919]

Do invitational competitions like Princeton require competitors to identify real hairs under a microscope?

They generally should, but they may also give microscope images if unable to obtain the hairs specified in the rules.

[alleycat03]

I was wondering if somebody could please explain the differences between different chromatography solvents?

At tournaments, I have used acetone, isopropyl alcohol, and simple DI water, depending on what the proctor provided. Which one of these is usually the best to use, and why? If, for example, DI water and isopropyl are both provided, is it better to use one of them over the other?