The 10 Fastest Science Supplies Ecommerce Sites

(October 2026) - real-user mobile speed from Google CrUX, 28-day window

Rank	Brand	CWV	LCP	INP	CLS
1	Celestron	PASS	1.4s	128ms	0.02
2	Home Science Tools	PASS	2.2s	187ms	0.07
3	Nasco Education	FAIL	2.1s	185ms	0.18
4	Carolina Biological	FAIL	2.5s	296ms	0.03
5	Texas Instruments	FAIL	2.9s	343ms	0.07
6	AmScope	FAIL	3.3s	146ms	0.17
7	Fisher Scientific	FAIL	3.6s	155ms	0.04
8	LabPlanet.com	FAIL	4.2s	90ms	0.04
9	Ward's Science	FAIL	4.9s	139ms	0.50
10	Flinn Scientific	FAIL	6.1s	162ms	0.38

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