I can't tell you how to do it. Here is a web site that shows a picture. The best picture is second from left and has a black section below two on the buret. It shows a meniscus about 1.4 mL but you can clearly see the upper part and the lower part.
In practice some students have trouble seeing the lower meniscus; I show them two tricks of the trade.
1. place a black card behind the buret and that makes the lower meniscus show up better.
2. Placing the finger of one hand behind (but not EXACTLY behind). The easiest way is to place the finder BELOW the meniscus, then slowly raise the finger to higher levels. At a point BELOW the meniscus the lower point of the meniscus reflects from the finger and makes it very visible.
https://www.google.com/search?q=picture+meniscus+in+burette&hl=en&client=firefox-a&hs=dmZ&rls=org.mozilla:en-US:official&prmd=imvns&tbm=isch&tbo=u&source=univ&sa=X&ei=Y-NhUPPlF4nu2gXL2ICwBg&ved=0CCQQsAQ&biw=677&bih=385
I'am unable to identify which is upper meniscus and lower meniscus while taking a solution in burette.please tell me how to identify it easily.
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