Examining the Impact of the OCD (and OCD 2) on Total Dissolved Solids Extraction

posted in: Espresso, Miscellaneous, Tools | 25

FacebookTwitterRedditTumblrDiggLinkedinPinterestStumbleUponInitially posted: 15 Dec 16 Updated: 22 Mar 17 Abstract The goal of this study was to explore the impact of the OCD distribution device on espresso as measured through total dissolved solids (TDS) extraction with a coffee-correlated refractometer (VST LAB … Continued

Examining the Impact of Particulate Matter in Refractometry for Coffee Assessment

posted in: Brewing, Miscellaneous, Tools | 14

FacebookTwitterRedditTumblrDiggLinkedinPinterestStumbleUpon Main Questions 1)     How does particulate matter affect refractive index (RI) measurements? 2)     Do VST filters affect sample content (nondissolved solids or otherwise)? Abstract Nondissolvable, light-scattering solids (i.e., titanium dioxide, TiO2) were added, in increasing amounts, to various solutions. … Continued

Measuring Total Dissolved Solids: A Refractometer Comparison (Part III — Espresso & Filters)

posted in: Espresso, Tools | 29

FacebookTwitterRedditTumblrDiggLinkedinPinterestStumbleUponPosted: 02 Jul 15 Updated: 08 Mar 16 Abstract Continuing with series on refractometer comparisons, the goal of this study was to examine the measurements from three refractometers advertised to measure the total dissolved solids (TDS) content of espresso. As … Continued

Looking at Burr Sharpness and TDS in Espresso

posted in: Grinding, Tools | 18

FacebookTwitterRedditTumblrDiggLinkedinPinterestStumbleUponAbstract This experiment assessed differences in espresso total dissolved solids (TDS) as a factor of burr sharpness. Ten shots were pulled for each condition (sharp burrs, dull burrs) and TDS measured using an Atago PAL-COFFEE refractometer. Results revealed a significant … Continued

Measuring Total Dissolved Solids: A Refractometer Comparison (Part II)

posted in: Brewing, Tools | 33

FacebookTwitterRedditTumblrDiggLinkedinPinterestStumbleUponUpdated: 26 May 15 Abstract Continuing from our previous post on refractometer comparisons, the goal of this study was to examine the measurements from three refractometers advertised to measure the total dissolved solids (TDS) content of coffee. In three separate … Continued

Measuring Total Dissolved Solids: A Refractometer Comparison

posted in: Brewing, Tools | 37

FacebookTwitterRedditTumblrDiggLinkedinPinterestStumbleUponAbstract The goal of these two studies was to examine the measurements from two refractometers advertised to measure the total dissolved solids (TDS) content of coffee. Utilizing mixed study designs, the VST LAB Coffee II Coffee & Espresso Refractometer (the … Continued

Espresso Grinding: The Impact of Burr Sharpness on Post-Brew Water Retention

posted in: Espresso, Grinding | 6

FacebookTwitterRedditTumblrDiggLinkedinPinterestStumbleUponAbstract The goal of this study was to examine the effect of sharp versus dull grinder burrs on the ability of water to saturate a puck of espresso grinds. To assess the level of saturation, post-brew water retained in the … Continued