TrippNT Medium Draft Shield — 15″ Clear Acrylic Cube with Downdraft Guard for Compact Analytical Balance and Instrument Protection The TrippNT Medium Draft Shield (SKU 50073) is the 15-inch cube in TrippNT’s four-size draft shield series, positioned between the Small 50029 (13-inch) and the Large 50046 (18-inch) to cover the critical balance footprint range from 0.1mg microbalances through most 0.001g and 0.01g semi-micro and analytical balances with standard 80–120mm pan diameters. At 15″ W × 15″ H × 16¼″ D in 3/16-inch cast clear acrylic, the 50073 fits the most common analytical balances in procurement — Mettler Toledo ME/ML/MS series (80mm pan), Sartorius Quintix/Practum/Cubis with 90mm pan, Ohaus Pioneer and Explorer with 90mm pan, and equivalent Shimadzu, Radwag, and A&D models — with clearance on all sides for sample manipulation through the open front. The 3-inch downdraft deflecting overhang panel (running the full 15-inch front width) blocks downward HVAC supply air that a conventional four-sided box misses entirely, directly reducing autozero cycle frequency and stabilization time on sensitive instruments. The semicircular cord pass-through on the rear panel accommodates RS-232 balance communication cables, data logger leads, and power cords without creating a gap in the lateral draft protection. Installation is tool-free: place over the instrument, route the cord through the rear cutout, and calibrate. Clear acrylic construction allows full visual access for sample manipulation and stock verification from any angle without disturbing the draft enclosure. Ships fully assembled, 6.3 lb. For instruments wider than 13 inches or taller than 14 inches (top-loading balances, gram-resolution bench scales, pH meters on tall electrode stands), specify the 50046 Large or 50240 Extra Large. Technical Specifications Specification Detail Material 3/16″ Cast Clear Acrylic Color / Finish Clear (fully transparent, 5 sides) Design Cube with 3-inch downdraft deflecting overhang panel Cord Passthrough Semicircular cutout, rear panel Installation Set-in-place, no fasteners Product Dimensions (W × H × D) 15″ × 15″ × 16¼″ Product Weight 6.3 lb Shipping Carton (L × W × H) 19½″ × 19½″ × 19″ Shipping Weight 15 lb (Ground) UPC 692041659066 HTS Code 3926.9 Country of Origin United States (Kansas City, MO) Laboratory and Clinical Applications The TrippNT 50073 is specified for balance and precision instrument protection in: GMP pharmaceutical weighing rooms (21 CFR Part 211 balance suitability, USP instrument qualification), ISO 17025-accredited labs (measurement uncertainty reduction from environmental sources), API manufacturing analytical suites, academic and research analytical balance rooms, clinical laboratory microbalance stations (Mettler Toledo MX5, XP6U), food and beverage QC gravimetric suites, environmental testing labs (gravimetric moisture and residue analysis), toxicology and forensic labs, contract testing organizations (CTOs) with multiple analyst shared balance rooms, semiconductor and electronics QA labs (thin film gravimetry, SMT component weighing), and any environment where HVAC supply-air turbulence or door-traffic drafts are a documented source of balance drift. Also deployed for refractometer, osmometer, and dissolved oxygen meter protection in pharmaceutical R&D environments. Product Documentation Sales Sheet — 50073 Medium Draft Shield (PDF) Made in the U.S.A. & Lifetime Guarantee Proudly manufactured in the United States by TrippNT. This draft shield is backed by a 100% Lifetime Guarantee, ensuring it is a permanent asset for your laboratory. Frequently Asked Questions How do I choose between the Medium 50073 (15-inch) and the Large 50046 (18-inch) draft shield? The primary selection criterion is the overall width of the instrument body at its widest point (not just the pan). Most 0.1mg analytical balances with a standard 80–90mm pan (Mettler Toledo ME104, Sartorius Quintix125, Ohaus Pioneer PA114) have a body width of 8–10 inches and fit comfortably under the 50073. Instruments with 100mm+ pans, built-in ionizer mounts, integral printer modules extending to the side, or top-loading balances with wide platen frames (10–14 inches body width) typically require the 50046 Large 18-inch. A practical rule: measure the balance body width, add 3 inches on each side for manipulation clearance, and choose the shield whose interior width exceeds that sum. Does the 50073 shield affect the balance’s internal anti-vibration system? No. The 50073 shield contacts the bench surface only at its four base perimeter edges and applies no mechanical coupling to the balance body. Modern analytical balances with active internal anti-vibration (Mettler Toledo LevelMatic, Sartorius MinWeigh/AuotoCal, Ohaus AutoCal) sense bench-transmitted vibration through the balance feet — the shield does not change the balance’s vibration load path. The shield’s primary function is to reduce air-current-induced pan oscillation, which is a different interference vector from structural vibration. In shared lab spaces where both vibration and draft are concerns, the 50073 can be combined with an anti-vibration table for comprehensive isolation. { "@context": "https://schema.org/", "@type": "Product", "name": "TrippNT Medium Draft Shield", "image": [ "https://www.trippnt.com/web/image/product.product/943/image_1024/%5B50073%5D%20Medium%20Draft%20Shield?unique=8f6381a", "https://www.trippnt.com/web/image/product.image/1241/image_1024/DWG%20-%2050073.1%20-%20Rev%208.webp?unique=a949f50", "https://www.trippnt.com/web/image/product.image/1612/image_1024/50046-5.jpg?unique=1d8a484" ], "description": "TrippNT 50073 medium draft shield. Clear 3/16-inch acrylic 15-inch cube with 3-inch downdraft guard — protects analytical balances and instruments from HVAC air currents. Semi-circle cord passthrough. Made in USA. 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Most 0.1mg analytical balances (Mettler ME104, Sartorius Quintix125, Ohaus Pioneer) fit under the 15-inch 50073. Wider instruments, integral printer modules, or top-loaders with 10-14 inch body widths typically need the 18-inch 50046." } }, { "@type": "Question", "name": "Does the 50073 shield affect the balance's internal anti-vibration system?", "acceptedAnswer": { "@type": "Answer", "text": "No. The shield contacts the bench only at its base perimeter edges and applies no mechanical coupling to the balance. Modern anti-vibration systems sense bench-transmitted vibration through balance feet — the shield does not affect that load path. The shield reduces air-current-induced pan oscillation, which is a separate interference vector from structural vibration." } } ] }
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