Device pixel density tests

-webkit-min-device-pixel-ratio
nothin’
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
-o-min-device-pixel-ratio
nothin’
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
min-resolution (dpi)
nothin’
96dpi
105dpi
115dpi
125dpi
135dpi
144dpi
154dpi
163dpi
173dpi
182dpi
192dpi
202dpi
211dpi
221dpi
230dpi
240dpi
250dpi
259dpi
267dpi
278dpi
288dpi
min-resolution (dppx)
nothin’
1.0dppx
1.1dppx
1.2dppx
1.3dppx
1.4dppx
1.5dppx
1.6dppx
1.7dppx
1.8dppx
1.9dppx
2.0dppx
2.1dppx
2.2dppx
2.3dppx
2.4dppx
2.5dppx
2.6dppx
2.7dppx
2.8dppx
2.9dppx
3.0dppx

If you have a device that isn’t listed below and has a -webkit-min-device-pixel-ratio that’s not 1.0, please let me know and I’ll add it to the list. I’m @marcedwards on Twitter and @marc on App.net.

Devices with -webkit-min-device-pixel-ratio: 1.0

All non-Retina Macs
Apple iPhone (1st generation)
Apple iPhone 3G
Apple iPhone 3GS
Apple iPad (1st generation)
Apple iPad 2
Apple iPad mini (1st generation)
Acer Iconia A500
Samsung Galaxy Tab 10.1
Samsung Galaxy S

Devices with -webkit-min-device-pixel-ratio: 1.3

Asus MemoPad HD 7
Google Nexus 7 (2012 model)

Devices with -webkit-min-device-pixel-ratio: 1.4

Nokia Lumia 520

Devices with -webkit-min-device-pixel-ratio: 1.5

Google Nexus S
HTC Desire
HTC Desire HD
HTC Incredible S
HTC Velocity
HTC Sensation
Kindle Fire HD
Samsung Galaxy S II
Sony Xperia Tablet Z
Sony Xperia U

Devices with -webkit-min-device-pixel-ratio: 2.0

All Macs with Retina displays
Apple iPhone 4
Apple iPhone 4S
Apple iPhone 5
Apple iPhone 5c
Apple iPhone 5s
Apple iPhone 6
Apple iPad (3rd generation)
Apple iPad 4
Apple iPad Air
Apple iPad mini (2rd generation)
HTC One X
Google Galaxy Nexus
Google Nexus 4
Google Nexus 7 (2013 model)
Google Nexus 10
Motorola Moto X
Samsung Galaxy S III
Samsung Galaxy Note II
Sony Xperia S
Sony Xperia T

Devices with -webkit-min-device-pixel-ratio: 3.0

Apple iPhone 6 Plus
HTC One (M7)
HTC Butterfly
LG G2
Nexus 5
OnePlus One
Oppo Find 7 (X9076)
Samsung Galaxy S4
Samsung Galaxy Note 3
Sony Xperia Z

Looking for a media query to cover most high-dpi devices? Here you go:
A CSS media query that captures almost all high DPI aware devices