Silicon Specimen Supports

Marsoni

M251S

$372.55

Get it in 3 business days with 1 day shipping. Friday, May 29

Silicon Specimen SupportsPELCO Silicon Nitride Coated 3mm Disks (blanks) 21555 10 These 3mm silicon disks have a 50nm ultra low stress silicon nitride layer (Si3N4) on both sides and can be used as specimen disks for AFM applications which need a Si3N4 background. Provide smooth background: Surface roughness has RMS (Rg) of 0. 65 0. 06nm which gives a mean roughness (RA) of 0. 45 0. 02nm. Product Specifications Film thickness: 50nm ultra low stress Si3N4 on both sides Disc

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My go-to sunscreen. It’s clean, lightweight, and doesn’t leave that white cast like a lot of mineral formulas. I have blonde extensions and this is one of the only ones I’ve found that doesn’t turn them pink, which is huge. Wears really nicely on the skin and layers well—definitely a staple for me.

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Reviewed in the United States on May 2, 2026

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Jennifer Kinzer

San Leandro, US

★★★★★ 4

Overall good basic

Size: 3 Fl Oz (Pack of 1)

I was looking at mineral sunscreens because they are more natural, but I found the chalky film they leave on the skin to be undesireable. Still, I did not want a fully chemical formula. I was able to find this hybrid that also has hydrating ingredients and ceramides for the skin. It goes on light and provides great coverage. It is a little shiny/greasy however which is why I dropped a star.

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Reviewed in the United States on January 31, 2026

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Xavier Vivenes

Cuba, US

★★★★★ 5

Great sunscreen for travel

Size: 3 Fl Oz (Pack of 1)

I’ve tried several sunblocks and this one is the one. CeraVe never disappoints. I took it with me to Cancun this past weekend and with plenty of sunshine my face and body stayed well protected. No sunburn at all. It also absorbs nicely and doesn’t leave white marks on the skin. The size is perfect for traveling with just a carry-on.

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Reviewed in the United States on March 12, 2026

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Jill P

Phoenix, US

★★★★★ 5

No white cast.

Size: 3 Fl Oz (Pack of 1)

I would prefer a 100% mineral sunscreen that is this sheer, but at least it's a hybrid. It goes on smoothly, no white or blue cast, and protects well. Very happy with this product.

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Reviewed in the United States on May 6, 2026

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Oldme

Battle Creek, US

★★★★★ 3

Generous amount and is a good sunscreen

Size: 3 Fl Oz (Pack of 1)

Goes on with a slightly white cast, but it’s cost effective. If they could only get rid of the white cast! Doesn’t pill under makeup, or over. can try mixing together with liquid foundation to eliminate white.

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Reviewed in the United States on December 19, 2025