109120 PL 7
标准（DIN/NBS）缓冲溶液，1瓶250毫升：pH 6.865/6.87
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Standard (DIN/NIST) buffer solutions
PTB/NIST traceable standard buffer solutions (work reference buffer solutions) for precision applications - safe use
Variants Art.-No. Name Content 109000 PL 2 Standard (DIN/NIST) buffer solution, 1 bottle with 250 ml: pH 1,679 /1,68 109110 PL 4 Standard (DIN/NIST) buffer solution, 1 bottle with 250 ml: pH 4,006 /4,01 109120 PL 7 Standard (DIN/NIST) buffer solution, 1 bottle with 250 ml: pH 6,865 /6,87 109130 PL 9 Standard (DIN/NIST) buffer solution, 1 bottle with 250 ml: pH 9,180 /9,18 109400 PL 12 Standard (DIN/NIST) buffer solution for special applications, 1 bottle with 250 ml: pH 12,47 109020 STAPL-4/7/9 Standard (DIN/NIST) buffer solution, package with 10 x 6 glass ampoules with each 20 ml: pH 4,01, pH 6,87, pH 9,18 (accuracy ± 0,01 pH at 25 °C) 109830 QSC Kit Initial calibration set for IDS pH sensors. Bundle with three ampoules pH 4,01; pH 6,86; pH 9,18. 109415 SORT/K Calibration and maintenance set standard (DIN/NIST) buffer solutions
3 bottles with each 250 ml: pH 4,006 - 6,865 - 9,180;
1 bottle with 250 ml pepsin cleaning solution
1 bottle with 250 ml KCl solution 3 mol/l
Highlights:- Standard buffering solutions as per DIN 19266-01: 2000
- Universal buffering solutions
- High accuracy up to ±0.01 pH (buffer ampoules)
- Every bottle is labeled with its own lot number and expiration date
Buffer solutions according DIN 19266-01: 2000 are the most widely distributed buffer solutions. They are the so-called work reference buffer solutions, and, because of their composition being listed in the standard, they are the best known buffer solutions. Standard buffering solutions by WTW are traceably certified to PTB/NIST for safe use.
The buffers pH 1.679, pH 4.006, pH 6.865, pH 9.180 and pH 12,47 (PL 2, PL 4, PL 7, PL 9 and PL 12) are available in 250 ml bottles.
They are accurate to ± 0.02 pH at 25 °C, (excepetion buffer 12.47: ± 0.05 pH). Also, every bottle is labeled with its own lot number and expiration date.
For particular accurate measuerements buffers pH 4.01, pH 6.87 and pH 9.18 are also available in glass ampoules with an accuracy of ± 0,01 pH at 25 °C.
