 鲜花( 17)  鸡蛋( 0)
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公认的硬度划分是:
. Q% k ^ _8 v- ^. fWater containing calcium carbonate at
: ?9 f% ^2 s: s5 w$ Tconcentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,# j8 K, i; F3 l" Z4 w$ ]
moderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard: F/ K' g$ a1 W" a" l2 o
爱城的水硬度在150-160之间,属于硬水,但不算很硬。这种硬度的水不需要在水厂进行软化处理,适当硬度的水对健康不但无害,反而有益。以下是加拿大主要城市水硬度指标:
$ Y0 ^0 t" [" l6 vMontreal 116 ppm,Calgary 165 ppm, Regina 496 ppm, Saskatoon 160-180 ppm, Winnipeg 77 ppm,Toronto 121 ppm,Vancouver < 3 ppm, Charlottetown, PEI 140–150 ppm, Waterloo Region 400 ppm, Guelph 460 ppm.
0 n' {' t ?3 c在家里根本不需要安装什么软化水装置,而且都要把水烧开的做法也不可取,钙和镁都沉降了下来,其实这两种元素都是身体需要的,直接喝冷水最好,如果肚子能适应的话。2 w5 ~6 Q, R, U, x6 {
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