{"product_id":"ims-b702tch26e-praecisionskurv-58-mm-convex","title":"IMS Competition Precision Filter Basket 58 mm Convex H26 – B702TCH26E","description":"\u003ch1\u003eIMS Competition Precision Basket 58 mm Convex H26\u003c\/h1\u003e\n\u003cp\u003eGet a more precise starting point for your espresso with the \u003cstrong\u003eIMS Competition B702TCH26E\u003c\/strong\u003e. This filter basket is designed for double espresso portions and combines a cylindrical shape with a convex bottom and 715 precision-manufactured micro-holes.\u003c\/p\u003e\n\u003cp\u003eThe basket is 26 mm high and designed for tampers with a diameter of 58 or 58.4 mm. The ridgeless construction provides a smooth exterior without a retention groove.\u003c\/p\u003e\n\u003ch2\u003eConvex bottom with centered flow\u003c\/h2\u003e\n\u003cp\u003eThe B702TCH26E features a slightly curved, convex bottom. This shape directs the finished espresso toward the center of the basket and creates a gathered flow during extraction.\u003c\/p\u003e\n\u003cp\u003eThe convex design is developed to:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eUtilize the coffee puck across the entire perforated area\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eConcentrate the espresso flow toward the center\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eProvide a clear flow in a bottomless portafilter\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eSupport the drying of the used coffee puck\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eMake the puck easier to knock out after brewing\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003eThe basket can also be used in compatible spouted portafilters, provided there is sufficient clearance for the height and the curved bottom.\u003c\/p\u003e\n\u003ch2\u003e715 precision-manufactured micro-holes\u003c\/h2\u003e\n\u003cp\u003eThe basket bottom features 715 holes with a diameter of 0.30 mm. The holes are arranged in a hexagonal pattern over a perforated area with a diameter of 49 mm.\u003c\/p\u003e\n\u003cp\u003eAs part of the IMS Competition series, the holes are re-laminated and calibrated after perforation. This ensures a consistent hole size and a more stable starting point for espresso extraction.\u003c\/p\u003e\n\u003cp\u003eThe precise perforation makes it easier to work systematically with:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eGrind size\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eDosing\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eCoffee distribution in the basket\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eBrew time\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eYield\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eCoffee-to-espresso ratio\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003eA precision basket cannot prevent channeling on its own. A consistent grind size, thorough distribution, and level tamping remain crucial.\u003c\/p\u003e\n\u003ch2\u003eRecommended dosing\u003c\/h2\u003e\n\u003cp\u003eThe optimal amount of coffee depends on the roast level, grind size, and the density of the coffee beans.\u003c\/p\u003e\n\u003cp\u003eIMS specifies the following recommended capacities:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eDark roast coffee:\u003c\/strong\u003e approx. 17–19 g\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eMedium roast coffee:\u003c\/strong\u003e approx. 18.5–21 g\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eLight roast coffee:\u003c\/strong\u003e approx. 20.5–23 g\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003eLightly roasted coffee beans typically have a higher density and therefore occupy less space at the same weight than dark-roasted beans.\u003c\/p\u003e\n\u003cp\u003eThese dosages should be used as a starting point. Always check that there is appropriate distance between the tamped coffee puck and the machine's shower screen. An overfilled basket can cause the puck to hit the brew head and affect water distribution.\u003c\/p\u003e\n\u003ch2\u003eFor 58 and 58.4 mm tampers\u003c\/h2\u003e\n\u003cp\u003eIMS specifies the basket for tampers with a diameter of 58 or 58.4 mm.\u003c\/p\u003e\n\u003cp\u003eA close-fitting tamper helps to compress the coffee evenly all the way to the edge of the basket. This reduces the amount of loose coffee along the sides and provides a better opportunity for a uniform puck.\u003c\/p\u003e\n\u003cp\u003eThe designation \"58 mm\" does not automatically mean the basket fits all espresso machines with a 58 mm brew head.\u003c\/p\u003e\n\u003cp\u003eTherefore, check:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eThe internal diameter of the portafilter\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eThe depth of the portafilter\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eThe 70 mm outer rim of the basket\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eThe 60 mm body diameter of the basket\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eThe 26 mm height of the basket\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eThe portafilter retention spring\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003eIt is recommended to compare these measurements with your existing filter basket before ordering.\u003c\/p\u003e\n\u003ch2\u003eRidgeless construction\u003c\/h2\u003e\n\u003cp\u003eThe basket is ridgeless and therefore has no external retention groove.\u003c\/p\u003e\n\u003cp\u003eThe smooth exterior makes the basket easier to insert and remove from the portafilter. How tightly it fits depends on the spring and construction of the portafilter.\u003c\/p\u003e\n\u003cp\u003eA ridgeless basket can still be held securely, but the fit may vary between different portafilters.\u003c\/p\u003e\n\u003ch2\u003eElectropolished surface\u003c\/h2\u003e\n\u003cp\u003eThe B702TCH26E has an electropolished surface. This process reduces microscopic imperfections and creates a smooth and hygienic surface.\u003c\/p\u003e\n\u003cp\u003eThe smooth finish makes the basket easier to clean and helps limit the accumulation of coffee oils and fine coffee particles.\u003c\/p\u003e\n\u003cp\u003eThe basket also undergoes wet vibro-finishing with ceramic elements as part of IMS’s post-processing.\u003c\/p\u003e\n\u003ch2\u003eSuitable for bottomless portafilters\u003c\/h2\u003e\n\u003cp\u003eThe convex bottom directs the espresso toward the center of the basket, making it particularly well-suited for a bottomless portafilter.\u003c\/p\u003e\n\u003cp\u003eA bottomless portafilter makes it easier to observe:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eWhether the flow starts evenly\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eWhether the espresso gathers toward the center\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eWhether channeling occurs\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eWhether the tamping is uneven\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eWhether coffee distribution should be improved\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003eA bottomless portafilter is, however, not necessary to use the basket.\u003c\/p\u003e\n\u003ch2\u003eHow to achieve a great result\u003c\/h2\u003e\n\u003col\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eSelect a starting dose that matches the roast level of the coffee.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eDistribute the ground coffee evenly in the basket.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eUse a WDT tool to break up clumps if necessary.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eTamp the coffee level with a suitable 58 or 58.4 mm tamper.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eCheck the distance between the coffee puck and the brew head.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eBrew the espresso and evaluate the flow, time, and taste.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eAdjust primarily the grind size while keeping the dosage stable.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ol\u003e\n\u003cp\u003eFeel free to start at the lower end of the recommended dosage range and increase gradually as needed.\u003c\/p\u003e\n\u003ch2\u003eCleaning and maintenance\u003c\/h2\u003e\n\u003cp\u003eKnock out the coffee grounds after each brew and rinse the basket thoroughly with warm water. Regularly check that the micro-holes are not clogged by coffee oils or fine coffee particles.\u003c\/p\u003e\n\u003cp\u003eFor deep cleaning, the basket can be soaked in a suitable cleaning agent for espresso and coffee equipment. Follow the manufacturer's instructions and rinse the basket thoroughly with clean water afterward.\u003c\/p\u003e\n\u003cp\u003eAvoid using needles, steel brushes, or other sharp tools that could damage or alter the shape of the micro-holes.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e IMS\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eSeries:\u003c\/strong\u003e Competition Convex\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eModel number:\u003c\/strong\u003e B702TCH26E\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eProduct type:\u003c\/strong\u003e Precision espresso basket\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eCapacity:\u003c\/strong\u003e Double espresso \/ 2 cups\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eHeight:\u003c\/strong\u003e 26 mm\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eOuter rim:\u003c\/strong\u003e 70 mm\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eBasket body:\u003c\/strong\u003e 60 mm\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eTamper size:\u003c\/strong\u003e 58–58.4 mm\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eBottom:\u003c\/strong\u003e Convex\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eRetention groove:\u003c\/strong\u003e No – ridgeless\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eNumber of holes:\u003c\/strong\u003e 715\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eHole diameter:\u003c\/strong\u003e 0.30 mm\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003ePerforated area:\u003c\/strong\u003e 49 mm\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eHole pattern:\u003c\/strong\u003e Hexagonal\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eSurface treatment:\u003c\/strong\u003e Electropolished\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eRecommended dose, dark roast:\u003c\/strong\u003e 17–19 g\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eRecommended dose, medium roast:\u003c\/strong\u003e 18.5–21 g\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eRecommended dose, light roast:\u003c\/strong\u003e 20.5–23 g\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003ePortafilter included:\u003c\/strong\u003e No\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cstrong\u003eTamper included:\u003c\/strong\u003e No\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003eThe IMS Competition B702TCH26E is an obvious choice for the espresso enthusiast who wants a ridgeless precision basket with a convex bottom, centered flow, and capacity for a standard or larger double espresso.\u003c\/p\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eHow much coffee fits in the IMS B702TCH26E?\u003c\/h3\u003e\n\u003cp\u003eIMS recommends approximately 17–19 g for dark roast, 18.5–21 g for medium roast, and 20.5–23 g for light roast coffee. The optimal dose also depends on the grind size and coffee density.\u003c\/p\u003e\n\u003ch3\u003eWhich tamper fits the basket?\u003c\/h3\u003e\n\u003cp\u003eThe basket is designed for tampers with a diameter of 58 or 58.4 mm. A close-fitting tamper helps compress the coffee evenly all the way to the edge.\u003c\/p\u003e\n\u003ch3\u003eDoes the basket fit all 58 mm espresso machines?\u003c\/h3\u003e\n\u003cp\u003eNo. You must also check the basket's outer rim (70 mm), body diameter (60 mm), and height (26 mm). The portafilter must also have clearance for the convex bottom.\u003c\/p\u003e\n\u003ch3\u003eWhat does the convex bottom mean?\u003c\/h3\u003e\n\u003cp\u003eThe convex bottom is slightly curved and directs the espresso flow toward the center of the basket. The shape is particularly well-suited for use with a bottomless portafilter.\u003c\/p\u003e\n\u003ch3\u003eWhat does \"ridgeless\" mean?\u003c\/h3\u003e\n\u003cp\u003eRidgeless means the basket has no external retention groove. Instead, the portafilter spring holds the basket against its smooth exterior.\u003c\/p\u003e\n\u003ch3\u003eHow many holes does the filter basket have?\u003c\/h3\u003e\n\u003cp\u003eThe basket has 715 precision-manufactured micro-holes with a diameter of 0.30 mm.\u003c\/p\u003e\n\u003ch3\u003eDoes the IMS basket prevent channeling?\u003c\/h3\u003e\n\u003cp\u003eNot on its own. The basket's uniform perforation provides a precise starting point, but proper grind size, dosage, distribution, and level tamping remain crucial.\u003c\/p\u003e\n\u003ch3\u003eCan the basket be used in a spouted portafilter?\u003c\/h3\u003e\n\u003cp\u003eYes, if the portafilter has sufficient diameter and depth for the basket's height and convex bottom. Always compare the measurements with your existing filter basket.\u003c\/p\u003e\n\u003ch3\u003eAre a portafilter or tamper included?\u003c\/h3\u003e\n\u003cp\u003eNo. The product consists only of the IMS filter basket. The portafilter, tamper, and other espresso equipment are sold separately.\u003c\/p\u003e","brand":"Brændeholm Risteri","offers":[{"title":"Default Title","offer_id":54275423699287,"sku":null,"price":199.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0926\/0705\/4167\/files\/IMSCompetitionPraecisionskurv58mmConvexH26_B702TCH26E.jpg?v=1786050096","url":"https:\/\/braendeholmristeri.dk\/en\/products\/ims-b702tch26e-praecisionskurv-58-mm-convex","provider":"Brændeholm Risteri","version":"1.0","type":"link"}