public static Standard ToStandard(this StandardEntity standardEntity) => standardEntity.Pipe(it => new Standard(it.Name, it.Pollutant, it.Limit, it.Percent));
protected bool Equals(StandardEntity other) => Name == other.Name && Pollutant == other.Pollutant && Limit.Equals(other.Limit) && Percent.Equals(other.Percent) && Id == other.Id;