PH56 buffer calibration solutions

[geek]

For this ph meter, what's a good place to get the 7.1 and 4.1 liquid?
I found this 2 together as a kit at Amazon, can I assume this is 'generic' solution and should work with any ph meter (Milwaukee, Hanna, etc)?

The are 2 8oz bottle each, not sure if that's a good price though, seem a bit high to me :

http://www.amazon.com/dp/B004HE7W42/?tag=skimlinks_replacement-20

 

[Pumpkinman]

Fairly standard pricing

 

[geek]

Found this cheaper at more wine:

http://morewinemaking.com/products/ph-calibration-solutions-set-2.html

.

 

[Boatboy24]

It should be noted that the MoreWine bottles are 4oz, where the ones on Amazon are 8oz. Shipping may come into play as well - if you're a Prime member, you get it free from Amazon.