yes, just got one today with the pH buffer. its by tropic marin, kinda confusing but for the most part it work I guess lol. this is my post on a local club forum:
Got a alkalinity test, altho this ones more confusing than any of the others I have, its from tropic marin. so it says to put drop until the water turns from green to red/orange. on the 6th drop is changed color from green, but not as dark as the orange/red thats on the box. it says each drop = one degree of hardness. so I guess its around 6dKH, then under that it says 7.5 english degree, not sure what number Im supposed to be looking at. I also got some seachem marine buffer.