---
title: "Glass Electrode"
industry: "Computer, Electronic and Optical Product Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:GLASS_ELECTRODE"
  data_integrity_hash: "2c062bc477e2836e09081493cab3683e"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:GLASS_ELECTRODE"
  data_source_uri: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/glass-electrode.md"
  official_resource_url: "https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/glass-electrode"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-14 pH at 0-80°C with -414 to +414 mV output"
    unit: "pH"
engineering_limits:
  max_safe_operating_point:
    value: 1.5
    unit: "MPa"
    consequence: "Hydronium ion exchange equilibrium disruption due to glass membrane hydration loss (H3O+ diffusion coefficient drops below 1×10^-9 cm²/s)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Asymmetric thermal expansion between pH-sensitive glass (α=8.5×10^-6/°C) and reference electrode body (α=17×10^-6/°C)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Thermal expansion coefficient matching using borosilicate glass housing with α=8.5×10^-6/°C"
  - node_2:
      trigger: "Hydrogen ion saturation at glass membrane surface exceeding 1×10^18 ions/cm²"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Automatic electrode cleaning cycle with 0.1M HCl solution every 24 operational hours"
bom_nodes:
  glass-membrane:
    type: "component"
    urn: "URN:CNFX:ME:GLASS_MEMBRANE"
    interface_type: "physical-logic-coupled"
  internal-reference-electrode:
    type: "component"
    urn: "URN:CNFX:ME:INTERNAL_REFERENCE_ELECTRODE"
    interface_type: "physical-logic-coupled"
  internal-buffer-solution:
    type: "component"
    urn: "URN:CNFX:ME:INTERNAL_BUFFER_SOLUTION"
    interface_type: "physical-logic-coupled"
  electrode-body:
    type: "component"
    urn: "URN:CNFX:ME:ELECTRODE_BODY"
    interface_type: "physical-logic-coupled"
  reference-junction:
    type: "component"
    urn: "URN:CNFX:ME:REFERENCE_JUNCTION"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 17025:2017 - GENERAL REQUIREMENTS FOR THE COMPETENCE OF TESTING AND CALIBRATION LABORATORIES"
    scope: "Verified Engineering Specification"
  - standard: "IEC 60746-2:2003 - EXPRESSION OF PERFORMANCE OF ELECTROCHEMICAL ANALYZERS - PART 2: PH VALUE"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/glass-electrode.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "65742e59adad7370b583c98fe159d3ec04d0f7b719067918ada69c12ec762864"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Glass Electrode

## 1. Technical Definition
A specialized sensor component within a pH monitoring probe that generates an electrical potential proportional to hydrogen ion concentration.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-14 pH at 0-80°C with -414 to +414 mV output**. Failure boundary: **Glass membrane fracture at 1.5 MPa internal pressure differential or dehydration below 5% relative humidity for 24 hours**, Mechanism: **Hydronium ion exchange equilibrium disruption due to glass membrane hydration loss (H3O+ diffusion coefficient drops below 1×10^-9 cm²/s)**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Asymmetric thermal expansion between pH-sensitive glass (α=8.5×10^-6/°C) and reference electrode body (α=17×10^-6/°C) | 8 | Glass membrane microcrack propagation leading to KCl electrolyte leakage | Thermal expansion coefficient matching using borosilicate glass housing with α=8.5×10^-6/°C |
| Hydrogen ion saturation at glass membrane surface exceeding 1×10^18 ions/cm² | 8 | Nernst equation deviation causing -59.16 mV/pH slope reduction to below -50 mV/pH | Automatic electrode cleaning cycle with 0.1M HCl solution every 24 operational hours |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | pH | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **pH Meter Calibration Station**, **Electrolyte Filling System**, **Glass Annealing Oven**  
**Downstream Applications**: Laboratory pH Meters, Industrial Process Control Systems, Water Quality Monitoring Equipment  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What makes glass electrodes suitable for computer and electronic manufacturing applications?
**A**: Glass electrodes provide precise, stable pH measurements essential for quality control in electronics manufacturing processes like chemical etching, plating, and cleaning, where pH levels affect product reliability and performance.

### Q: How does the silver/silver chloride reference element in a glass electrode work?
**A**: The silver/silver chloride reference element maintains a constant electrical potential by creating a stable interface with the internal buffer solution, ensuring accurate pH readings by completing the electrochemical circuit within the electrode.

### Q: What maintenance is required for glass electrodes in industrial pH monitoring systems?
**A**: Regular calibration with standard buffer solutions, proper storage in electrode storage solution to prevent glass membrane dehydration, and periodic cleaning to remove contaminants from manufacturing processes ensure long-term accuracy and reliability.

## 6. Manufacturing Compliance
- ISO 17025:2017 - GENERAL REQUIREMENTS FOR THE COMPETENCE OF TESTING AND CALIBRATION LABORATORIES
- IEC 60746-2:2003 - EXPRESSION OF PERFORMANCE OF ELECTROCHEMICAL ANALYZERS - PART 2: PH VALUE

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Glass Electrode](https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/glass-electrode)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **5** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: GLASS_ELECTRODE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 059ff42b
