N-Heptan für die Spektroskopie 1 Liter

Marsoni

M251S

$144.23

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

N-Heptan für die Spektroskopie 1 Litern Heptan fr die Spektroskopie CHEM 614704707 Technische Informationen ber chemische Reagenzien: Chemische Formel: CH. Bezeichnung: n Heptan Molare Masse: 100,21 g mol CAS Nummer: 142 82 5 EC Nummer: 205 563 8 Aggregatzustand: flssig Farbe: farblos Geruch: hnlich wie Benzin Schmelzpunkt: 90C Siedepunkt: 98C Selbstentzndungstemperatur: 223C Flammpunkt: 4C Explosionsgrenzen: untere: 1,1 Vol%, obere: 6,7 Vol%. Viskositt: 0,42 mPa s (20C) Dampfdruck: 48

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These Crest 3D whitening strips are seriously effective! I noticed a difference after just a few uses—my teeth looked brighter and cleaner without any harsh sensitivity. They stick well and stay in place, which makes it easy to go about my day while using them. The results feel professional without the expensive price tag. Definitely a simple and convenient way to freshen up your smile at home!

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Reviewed in the United States on May 11, 2026

Verified Purchase

Diana diana

Dallas, US

★★★★★ 5

Really works!

Size: 40 Count (Pack of 1), Size: 40 Count (Pack of 1)

I used this product faithfully and it worked!my teeth got brighter, and whiter I wish I could have taken a before and after.

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Reviewed in the United States on June 8, 2026

Verified Purchase

Underhill

Port Orchard, US

★★★★★ 5

Truly see the difference

Size: 40 Count (Pack of 1)

Works amazingly. Definitely worth it.

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Reviewed in the United States on June 9, 2026

Verified Purchase

Amazon Customer

Fort Morgan, US

★★★★★ 5

The strips work great!

Size: 40 Count (Pack of 1)

It's a great product that works. I left the strips on for 2 hours. And my teeth were so white, I decided not to use the light. I drink 3-4 cups of strong coffee everyday, and they are still really white (after one application over two weeks ago). My gums were a little sensitive after 2 hours, but that only lasted a few hours after usage. Just be aware if you leave on more than 60 minutes. Then brush and rinse really good. I use their "brilliance" tooth paste as well.

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Reviewed in the United States on June 16, 2025

Verified Purchase

Ems

Draper, US

★★★★★ 4

DOOOO IT (see before & after pics)

Size: 40 Count (Pack of 1), Size: 40 Count (Pack of 1)

My dentist actually recommended this in contrast to the products offered in office! So I had to try. I was especially interested in a whitening system that would not sacrifice effectiveness for gum sensitivity. Not only could I see instant improvement, but I had no gum irritation whatsoever, not even next day. So that's the two big things that exceeded expectation. A few drawbacks though - (1) Instructions were unclear as to how long to leave the light on, & I didn't realize until after mixed Internet recommendations & testing it out blindly that it automatically times out after a few minutes; (2) the product unfortunately outlasts the light's battery life, so I had to find a $16 replacement LED on Ebay, & (3) the adhesive will strip your dental work fyi. Not cool, but still overall beneficial as a whitener & hundreds cheaper than true, professional whitening. BTW this before and after were taken within a month of each other.

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Reviewed in the United States on April 29, 2026