• Y043 2000ppm Nitrate Ion Standard Solution
• 14-ml x 6 bottles
• For Cardy C-141, Twin B-343, and LAQUAtwin B-743, NO3-11

Calibration and maintenance set with technical buffer solution for gel electrodes, 3 bottles with 1 l each: pH 4.01/ 7.00/ 10.01 Trace, 2 bottles with 250 ml 3 mol/l KCl solution.

• Y044 30ppm Nitrate Ion Standard Solution 
• 14-ml x 6 bottles
• For Twin B-342 and LAQUAtwin B-742, NO3-11S

• Y031L 150ppm Potassium Ion Standard Solution
• 14-ml x 6 bottles
• For Cardy C-131 and LAQUAtwin B-731, K-11

• 1413 µS/cm KCl Conductivity Sachets, box of 20 x 20 mL sachets are economical and convenient for laboratory use.
• Box of 20x20 ml sachets

• 514-50 5.0% NaCl Standard Solution
• 14-ml x 6 bottles
• For Cardy C-121 and LAQUAtwin B-721, Salt-11, and Salt-22

10 µS/cm KCl Conductivity Sachets, box of 20 x 20 ml sachets are economical and convenient for laboratory use.

• Y022L 150ppm Sodium Ion Standard Solution
• 14-ml x 6 bottles
• For Cardy C-122 and LAQUAtwin B-722, Na-11

514-05 0.5% NaCl Standard Solution

14-ml x 6 bottles

For Cardy C-121 and LAQUAtwin B-721, Salt-11, and Salt-22

• Y042 300ppm Nitrate Ion Standard Solution
• 14-ml x 6 bottles
• For Twin B-341, B-342 and LAQUAtwin B-741, B-742, NO3-11C, NO3-11S

• 5ml glass bottle
• Plastic pipette
• 12-months shelf life
• Traceable to NIST and ICUMSA
• Supplied with UKAS certificate of calibration

pH electrode Protein Cleaning Solution packed in 480 ml durable plastic bottles whereeconomical and convenient for laboratory use.

• 2000ppm Sodium Ion (Na+) Standard Solution
• 14-ml x 6 bottles
• For Cardy C-122 and LAQUAtwin B-722, Na-11

12.88 mS/cm KCl Calibration Solution packed in 480 ml durable plastic bottles whereeconomical and convenient for laboratory use.

• Y031H 2000ppm Potassium Ion Standard Solution 
• 14-ml x 6 bottles
• For Cardy 131 and LAQUAtwin B-731, K-11

111.8 mS/cm KCl Calibration Solution packed in 480 ml durable plastic bottles whereeconomical and convenient for laboratory use.