Table 5.
Production variables for the various reference electrode types.
| RE Type | Cost Est. * | Complexity/Tooling | Production Time Total (d)/Work (h) ☨ | Rejection Rate | Issues | Sum |
|---|---|---|---|---|---|---|
| QB30(PVC) | 200 € § | medium | 3/2 | 80% | rejection | −− |
| QB25(PU) | 200 € § | medium | 5/2 | 20% | time to obtain | ++ |
| RKCl | 120 € | high | 1/8 | 0% | cost | − |
| PVA | 0.37 € | high | 1/2 | 10% | bubbles, hardness, pin placement | + |
| UF resin | 0.43 € | low | 1/1 | 10% | body wall adhesion | + |
* Ag/AgCl pin price ignored in all cases; § Phillips body 99.5% of the total price; use of a simplified plastic body drops the price by an order of magnitude.☨ work time to produce 10 electrodes.