SCA Standards and Protocols¶

The Specialty Coffee Association establishes and maintains comprehensive standards and protocols that define quality benchmarks, evaluation methods, and best practices across the coffee industry. These standards provide the foundation for objective quality assessment and consistent coffee preparation worldwide.

Overview¶

SCA standards serve multiple purposes: - Define Specialty Coffee quality thresholds - Standardize evaluation methodologies - Provide technical specifications - Ensure consistency across markets - Enable objective quality communication - Support professional education

All standards are developed through industry collaboration, scientific research, and practical testing.

Quality Standards¶

Coffee Grading and Scoring¶

Specialty Coffee Definition¶

Specialty Grade Coffee: Scores 80 points or higher on the 100-Point Scale

Requirements: - No primary defects in 350g sample - Maximum 5 secondary defects in 350g sample - Zero Category 1 defects (unacceptable flaws) - Minimum cup score of 80 points - No faded, off-odors, or taste defects

The 100-Point Scale¶

Score Ranges: - 90-100 points: Outstanding specialty coffee (extremely rare) - 85-89.99 points: Excellent specialty coffee - 80-84.99 points: Very good specialty coffee (specialty grade minimum) - 75-79.99 points: Premium coffee (below specialty) - 60-74.99 points: Exchange grade (commercial) - <60 points: Below standard (not suitable for specialty)

Scoring Components (see 100-Point Scale): - Fragrance/Aroma (10 points) - Flavor (10 points) - Aftertaste (10 points) - Acidity (10 points) - Body (10 points) - Balance (10 points) - Sweetness (10 points: 5 cups × 2 points) - Clean Cup (10 points: 5 cups × 2 points) - Uniformity (10 points: 5 cups × 2 points) - Overall impression (10 points) - Total: 100 points possible - Minus: Defect deductions

Green Coffee Standards¶

Defect Classification¶

Category 1 Defects (Primary): - Full Black: Complete internal black bean - Full Sour: Completely sour/fermented bean - Dried Cherry/Pod: Whole dried cherry in sample - Fungus Damage: Visible fungal growth - Foreign Matter: Stones, sticks, large debris - Severe Insect Damage: Heavy insect destruction

Equivalency: 1 full defect = 1 defect count

Category 2 Defects (Secondary): - Partial Black: Partially black beans - Partial Sour: Partially sour beans - Parchment: Dried parchment in sample - Floaters: Very light, low-density beans - Immature/Unripe: Green, underdeveloped beans - Withered: Shriveled, dehydrated beans - Shells: Malformed, hollow beans - Broken/Chipped: Fragmented beans - Hull/Husk: Remaining coffee fruit material - Minor Insect Damage: Small insect holes

Equivalency: Varies by defect type (2-5 beans = 1 defect)

For detailed classifications, see SCA Grading Standards.

Sample Preparation¶

Sample Size: 350 grams of green coffee
Pre-sorting: Remove obvious foreign matter
Methodology: Sort on black sorting tray
Documentation: Record all defects by category
Moisture Content: 10-12% ideal for specialty

Cupping Protocol¶

The SCA Cupping Protocol is the standardized methodology for sensory evaluation of coffee quality.

Sample Roasting¶

Roast Target: Light roast (Agtron 58±1 for whole bean, 63±1 for ground)
Time to First Crack: 8-12 minutes
Development Time: Approximately 8-12% of total roast
Cooling: Immediate and rapid after roast
Resting: 8-24 hours after roasting before cupping

Cupping Setup¶

Grind: - Timing: Grind within 15 minutes of cupping - Size: Medium-coarse (70-75% passing through US Standard #20 sieve) - Amount: 8.25 grams per cup

Water: - Temperature: 93°C (200°F) at time of pouring - Quality: Clean, odor-free, following SCA Water Standards - Amount: 150ml per cup

Cups: 5-6 cups per sample for uniformity assessment

Cupping Procedure¶

Timeline: 1. 0:00 - Pour water over grounds 2. 0:00-3:00 - Evaluate dry and wet fragrance/aroma 3. 4:00 - Break crust, evaluate nose 4. 4:00-4:30 - Skim surface clean 5. 8:00-10:00 - Begin tasting (slurping) 6. 10:00-15:00 - Continue evaluation as coffee cools 7. 15:00+ - Final assessment at room temperature

Tasting Technique: - Aspirate/slurp coffee to atomize across palate - Evaluate flavor, acidity, body, aftertaste - Assess sweetness, clean cup, uniformity - Note overall impression and balance

Scoring: Use 100-Point Scale evaluation form

For complete protocol details, see SCA Cupping Protocol.

Brewing Standards¶

Coffee Brewing Control Chart¶

The Brewing Coffee Control Chart defines optimal brewing parameters.

Optimal Extraction Range: 18-22% extraction yield
Ideal Strength Range: 1.15-1.35% TDS (American standard)
European Strength Range: 1.20-1.45% TDS (slightly stronger preference)

Chart Quadrants: - Under-extracted, Weak: Low extraction, low TDS (sour, watery) - Under-extracted, Strong: Low extraction, high TDS (sour, concentrated) - Over-extracted, Weak: High extraction, low TDS (bitter, thin) - Over-extracted, Strong: High extraction, high TDS (bitter, heavy) - Ideal Zone: 18-22% extraction, 1.15-1.35% TDS (balanced, sweet)

Brewing Recommendations¶

General Guidelines: - Coffee-to-Water Ratio: 55 g/L (1:18 ratio) as starting point - ../Water Temperature: 90-96°C depending on roast level - Brew Time: Variable by method - ../Maps of Content/Grind Size MOC: Adjusted to achieve proper extraction

Method-Specific (see Brewing Fundamentals MOC): - Pour-over: 2:30-3:30 total time - French Press: 4:00 steep time - Espresso: 25-30 seconds for double shot - Cold brew: 12-24 hours steep

Water Standards¶

Water quality profoundly affects coffee brewing and must meet specific criteria.

SCA Water Quality Standards¶

Total Dissolved Solids (TDS): 75-250 ppm
Calcium Hardness: 50-175 ppm CaCO₃
Total Alkalinity: 40-70 ppm CaCO₃
pH: 6.5-7.5
Sodium: <10 ppm
Chlorine: 0 ppm (must be filtered out)

Odor: None (odor-free, fresh)
Color: Clear and colorless
**Free of Chlorine and other treatment chemicals

Why Water Matters¶

Extraction solvent: Water dissolves coffee compounds
Mineral content: Affects extraction efficiency and flavor
pH and alkalinity: Influence acidity perception
Off-flavors: Chlorine and contaminants ruin coffee
Equipment health: Scale formation damages machines

For detailed water information, see Water Chemistry and SCA Water Standards.

Technical Standards¶

Equipment Specifications¶

Espresso Machines: - Brew temperature: 90.5-96°C (195-205°F) - Brew pressure: 8.5-9.5 bar - Steam pressure: 1.0-1.5 bar - Pump capacity: Adequate flow rate - Temperature stability: ±1°C

Grinders: - Burr type: Flat or conical (blade not recommended for specialty) - Grind consistency: Minimal fines and boulders - Retention: Low dead space - Speed control: Prevent heat generation - Adjustment: Precise, repeatable settings

Laboratory Standards¶

Sample Preparation: - Consistent roast methodology - Calibrated equipment - Environmental controls - Documentation protocols

Measurement Tools: - Refractometer for TDS - Scales: 0.1g precision minimum - Thermometers: ±0.5°C accuracy - Timers: 0.1 second precision

Competition Standards¶

The SCA sanctions Coffee Competitions with specific standards:

World Championship Rules¶

Each championship (Barista, Brewers Cup, Roasting, etc.) has detailed rules covering: - Equipment specifications - Time limits and format - Judging criteria and scoring - Sensory evaluation protocols - Technical requirements - Presentation guidelines

Judge Certification¶

Judges must complete: - Championship-specific training - Calibration sessions - Written and practical exams - Annual recalibration - Code of ethics adherence

Sustainability Standards¶

While SCA doesn't directly certify sustainability, it provides guidance on:

Best Practices¶

Environmental stewardship at origin
Fair labor practices
Economic sustainability for farmers
Climate change adaptation
Waste reduction in processing
Energy efficiency in roasting and brewing

Recognized Certifications¶

The SCA acknowledges third-party certifications: - Fair Trade - Organic Certification - Rainforest Alliance - UTZ Certified - Direct Trade programs

Standards Development Process¶

How Standards Are Created¶

Industry Need Identification: Gap or inconsistency recognized
Committee Formation: Experts convened from multiple sectors
Research and Testing: Scientific study and practical trials
Draft Development: Initial standard proposal created
Industry Review: Feedback from practitioners worldwide
Revision: Incorporate feedback and refine
Approval: SCA board approval and adoption
Publication: Release to members and industry
Education: Training and dissemination
Periodic Review: Regular updates as needed

Stakeholder Input¶

Standards development includes: - Producers and farmers - Importers and exporters - Roasters and QC professionals - Baristas and brewing experts - Scientists and researchers - Equipment manufacturers - Competition judges

Application and Adoption¶

Who Uses SCA Standards¶

Coffee Professionals: - Q Graders for green coffee evaluation - Roasters for quality control - Baristas for espresso and brewing - Buyers and traders for purchasing decisions - Judges for competition evaluation

Businesses: - Cafés for recipe development - Roasteries for quality assurance - Importers for grading and contracts - Equipment manufacturers for specifications

Education: - SCA Coffee Skills Program curriculum - University coffee programs - Professional training centers - Competition preparation

Industry Impact¶

Benefits: - Common language for quality - Objective assessment criteria - Transparent quality communication - Supplier-buyer alignment - Consumer trust and education - Professional credibility

Limitations: - Western-centric perspective (historical) - May not capture all quality dimensions - Requires training for proper application - Subject to individual interpretation - Evolving with new knowledge

Resources and Publications¶

Official Documents¶

Available from SCA: - Protocols & Best Practices handbook - The Coffee Brewing Handbook - Water for Brewing guidelines - Green coffee defect handbook - Cupping forms and scoresheets - Equipment specification guides

Staying Current¶

Standards evolve; professionals should: - Maintain SCA Membership for updates - Attend SCA Events for announcements - Follow SCA communications - Participate in industry discussions - Engage in continuing education

Tags: #standards #quality-control #protocols #coffee-evaluation #sca

Related: Specialty Coffee Association MOC | SCA Cupping Protocol | 100-Point Scale | SCA Grading Standards

See Also: Coffee Quality MOC | Brewing Fundamentals MOC | Q Grader | Sensory Science MOC