Does Sensorex make Calomel pH electrodes ?
No. Due to the hazardous materials (Mercury and mercurous compounds) used in Calomel electrodes, Sensorex has developed a superior pH electrode using non-hazardous materials. Calomel electrodes were primarily used in applications involving proteins, sulfide, Mercaptan and silver ions. These materials react with the silver ions in the typical reference solution/gel and precipitate at the reference junction, plugging the junction, creating a reference junction potential, and/or contaminating the reference solution/gel. Sensorex offers a double junction design with no silver or chloride ions in contact with the sample. The classical problems (hysteresis, instability, and short life at elevated temperatures) characteristic of Calomel electrodes are eliminated with the Sensorex Double Reference Junction design.
No. Due to the hazardous materials (Mercury and mercurous compounds) used in Calomel electrodes, Sensorex has developed an alternative calomel free pH electrode using non-hazardous materials. Calomel electrodes were primarily used in applications involving proteins, sulfide, Mercaptan and silver ions. These materials react with the silver ions in the typical reference solution/gel and precipitate at the reference junction, plugging the junction, creating a reference junction potential, and/or contaminating the reference solution/gel. Sensorex offers a calomel free design or a conventional double junction design with no silver or chloride ions in contact with the sample. The classical problems (hysteresis, instability, and short life at elevated temperatures) characteristic of Calomel electrodes are eliminated with the Sensorex Calomel Free or Conventional Double Reference Junction design.
